Finding the Fourth Proportional to 1,155.52, 1,730.82 and 935.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,155.52 : 1,730.82 = 935.20 : x
2. Step 2: Convert to fraction form
   1,155.52/1,730.82 = 935.20/x
3. Step 3: Cross multiply
   1,155.52x = 1,730.82 × 935.20
4. Step 4: Simplify right side
   1,155.52x = 1,618,662.86
5. Step 5: Solve for x
   x = 1,618,662.86/1,155.52
6. Step 6: Final answer
   x = 1,400.81