u sure it will work?If you really dont have the money for a new psu then i suggest going with https://www.zotac.com/us/product/graphics_card/zotac-geforce-gtx-1050-ti-mini#spec
It has a tdp of 75W so 185W-75W=110W
Your i3 7th gen 3.9ghz which i suppose is i3 7100 has a tdp of 51W,so 110W-51W=59W left,which i think would be enough