They were 'fortunate' (enough) to escape injury when their car crashed. = It was 'fortunate' that they escaped injury when their car crashed.
We're 'fortunate' in having these opportunities. = We're 'fortunate' to have these opportunities.
We should try to help others who are less 'fortunate' than ourselves.
(..) - Okay, that was uncalled for. - You started it, dude. Could I have everyone's attention, please? What a wonderful occasion this is. And how fortunate that it should fall on Take Your Daughter to Work Day. We're here to welcome Mr. Dennis Kim to our little family. Welcome, Dennis Kim. (..)2008 TvShow: The Big Bang Theory Title: The Jerusalem Duality Season: 1 Episode 12