Hi Printmark,
I can confirm that currently Quick Base doesn't have a formula function for Proper Case. If you think this would be a useful feature for your users I would suggest adding it to our User Voice page. User Voice is a tool our Product Managers use to take in feedback from our users on future features and enhancements. The Quick Base User voice can most easily be accessed from the My Apps page in Quick Base by clicking on the orange Feedback tab that appears on the right of the page or at
http://quickbase.uservoice.com by signing in with your Quick Base credentials. If you do make a User Voice post to add Proper Case as a formula function I would encourage you to include a link to that suggestion here in this thread so that the community members here can add their vote as well. Thank you for your time Printmark.