Finding the Fourth Proportional to 2,562.89, 3,844.87 and 831.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,562.89 : 3,844.87 = 831.38 : x
2. Step 2: Convert to fraction form
   2,562.89/3,844.87 = 831.38/x
3. Step 3: Cross multiply
   2,562.89x = 3,844.87 × 831.38
4. Step 4: Simplify right side
   2,562.89x = 3,196,526.72
5. Step 5: Solve for x
   x = 3,196,526.72/2,562.89
6. Step 6: Final answer
   x = 1,247.24