Finding the Fourth Proportional to 1,132.10, 1,587.10 and 1,132.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,132.10 : 1,587.10 = 1,132.10 : x
2. Step 2: Convert to fraction form
   1,132.10/1,587.10 = 1,132.10/x
3. Step 3: Cross multiply
   1,132.10x = 1,587.10 × 1,132.10
4. Step 4: Simplify right side
   1,132.10x = 1,796,755.91
5. Step 5: Solve for x
   x = 1,796,755.91/1,132.10
6. Step 6: Final answer
   x = 1,587.10