Sorry for the wait!

I've just realized that I don't necessarily need the face anymore, but I'd still like to know how do to it if it comes up again in the future.

Hi! I've been learning sketchup for a class I'm taking, and have come across a very... interesting problem! I'm trying to make a curved face connect to three lines. Sorry if that's not the best explanation. The main problem is that none of the lines are the same, so follow me doesn't work, and I can't figure out how to make them interact correctly. Ugh, would pictures help? Sorry if this isn't the right forum, I googled in a fit of desperation and ended up here, and frankly I just want an answer. I'll take anything, wikihow or video or whatever. Please respond!