Finding the Fourth Proportional to 2,562.24, 3,843.72 and 831.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,562.24 : 3,843.72 = 831.12 : x
2. Step 2: Convert to fraction form
   2,562.24/3,843.72 = 831.12/x
3. Step 3: Cross multiply
   2,562.24x = 3,843.72 × 831.12
4. Step 4: Simplify right side
   2,562.24x = 3,194,592.57
5. Step 5: Solve for x
   x = 3,194,592.57/2,562.24
6. Step 6: Final answer
   x = 1,246.80