Complete form with closest address

Hi All

I have a workflow for the HTML 5 viewer which captures a point based on your location and allows you to fill out a form. (Our purposes it captures sidewalk deficiencies)

Is it possible to auto fill one of the text boxes or combo boxes ("Address" in my case) with the details of the closest point?  We would like to know what the  closest address is to the point captured without having manually add it.

This would be a great addition to the workflow.  Any suggestions would be welcome!

Thanks!