Finding the Fourth Proportional to 2,831.31, 4,247.96 and 1,101.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,831.31 : 4,247.96 = 1,101.15 : x
2. Step 2: Convert to fraction form
   2,831.31/4,247.96 = 1,101.15/x
3. Step 3: Cross multiply
   2,831.31x = 4,247.96 × 1,101.15
4. Step 4: Simplify right side
   2,831.31x = 4,677,641.15
5. Step 5: Solve for x
   x = 4,677,641.15/2,831.31
6. Step 6: Final answer
   x = 1,652.11