Trying to finish loft from vertical to horizontal with taper

[drakeburgoon]

I have been fighting this design for a while and cannot figure it out. I drew a rib of the finish profile I want. I thought this would be an easy loft function but I have been fighting it for hours without being able to figure it out. Any help would be greatly appreciated. 

[drakeburgoon]

A couple pictures to maybe help. 

[wersy]

If the parts fit together exactly it should go.

[drakeburgoon]

That's exactly what I was trying to do. How did you do it? 

[wersy]

I don't it is what you want.

Nothing fits together. You must design carefully.

I add a sketch.

What I did is rubbish 🙂

[johnsonshiue]

Hi! Here is a solution without using Loft. Instead of Loft, I used Revolve and Non-Uniformed Scale. Though the resultant geometry isn't dimensionally accurate per sketches, the technique creates much smoother geometry and it is easier to control the outcome.

Many thanks!