Finding the Fourth Proportional to 1,132.38, 1,562.31 and 690.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,132.38 : 1,562.31 = 690.12 : x
2. Step 2: Convert to fraction form
   1,132.38/1,562.31 = 690.12/x
3. Step 3: Cross multiply
   1,132.38x = 1,562.31 × 690.12
4. Step 4: Simplify right side
   1,132.38x = 1,078,181.38
5. Step 5: Solve for x
   x = 1,078,181.38/1,132.38
6. Step 6: Final answer
   x = 952.14