Could you provide an example of a father of the bride engagement party toast

These sites have some good ideas:

Engagement Toasts - Sample Engagement Party Toasts

Father of the bride toast

Wedding Toasts for the Father of the Bride

If you Google "engagement toasts father of the bride" (without quote marks), you should be able to find other sites with suggestions.

I have been fortunate to be Best Man three times so far in my life, and, I have learned the hard way that the only way to give an effective toast is NOT to read from the page. The best toasters, I have found, are those that have a general idea of what they are going to say and then stand up and say it from the heart.

By not reading it or having it memorized, it will come across much better. The essentials are the opening and closing of the toast. The middle is going to come from your heart. Think about important memories you have of her growing up. Relate the feeling of pride and joy you have for the adult she has become. It will be great!