Finding the Fourth Proportional to 1,131.40, 1,562.24 and 758.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.40 : 1,562.24 = 758.70 : x
2. Step 2: Convert to fraction form
   1,131.40/1,562.24 = 758.70/x
3. Step 3: Cross multiply
   1,131.40x = 1,562.24 × 758.70
4. Step 4: Simplify right side
   1,131.40x = 1,185,269.12
5. Step 5: Solve for x
   x = 1,185,269.12/1,131.40
6. Step 6: Final answer
   x = 1,047.61