Finding the Fourth Proportional to 1,022.91, 1,536.62 and 731.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,022.91 : 1,536.62 = 731.31 : x
2. Step 2: Convert to fraction form
   1,022.91/1,536.62 = 731.31/x
3. Step 3: Cross multiply
   1,022.91x = 1,536.62 × 731.31
4. Step 4: Simplify right side
   1,022.91x = 1,123,745.57
5. Step 5: Solve for x
   x = 1,123,745.57/1,022.91
6. Step 6: Final answer
   x = 1,098.58