Lofting to a point-square to round transition.

This seems like a simple shape but I can't seem to figure out how to build it in either surfaces or solids. Does not seemt to be achievalbe with variable fillets. Tryed a boundary boss to a very small circle but the rounded part is very minimal, concentrated at the tip. I want it to be a smooth, even transition from sqaure to round at the tip. Any ideas? Thanks, J

SolidworksParts And Features