Finding the Fourth Proportional to 3,831.32, 5,287.54 and 2,259.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,831.32 : 5,287.54 = 2,259.72 : x
2. Step 2: Convert to fraction form
   3,831.32/5,287.54 = 2,259.72/x
3. Step 3: Cross multiply
   3,831.32x = 5,287.54 × 2,259.72
4. Step 4: Simplify right side
   3,831.32x = 11,948,359.89
5. Step 5: Solve for x
   x = 11,948,359.89/3,831.32
6. Step 6: Final answer
   x = 3,118.60