Finding the Fourth Proportional to 2,831.31, 4,247.18 and 883.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,831.31 : 4,247.18 = 883.50 : x
2. Step 2: Convert to fraction form
   2,831.31/4,247.18 = 883.50/x
3. Step 3: Cross multiply
   2,831.31x = 4,247.18 × 883.50
4. Step 4: Simplify right side
   2,831.31x = 3,752,379.11
5. Step 5: Solve for x
   x = 3,752,379.11/2,831.31
6. Step 6: Final answer
   x = 1,325.32