Finding the Fourth Proportional to 2,831.18, 4,248.24 and 1,272.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,831.18 : 4,248.24 = 1,272.27 : x
2. Step 2: Convert to fraction form
   2,831.18/4,248.24 = 1,272.27/x
3. Step 3: Cross multiply
   2,831.18x = 4,248.24 × 1,272.27
4. Step 4: Simplify right side
   2,831.18x = 5,404,901.94
5. Step 5: Solve for x
   x = 5,404,901.94/2,831.18
6. Step 6: Final answer
   x = 1,909.06