Finding the Fourth Proportional to 1,085.91, 1,629.32 and 793.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.91 : 1,629.32 = 793.70 : x
2. Step 2: Convert to fraction form
   1,085.91/1,629.32 = 793.70/x
3. Step 3: Cross multiply
   1,085.91x = 1,629.32 × 793.70
4. Step 4: Simplify right side
   1,085.91x = 1,293,185.28
5. Step 5: Solve for x
   x = 1,293,185.28/1,085.91
6. Step 6: Final answer
   x = 1,190.88