Finding the Fourth Proportional to 2,555.31, 3,831.43 and 1,149.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,555.31 : 3,831.43 = 1,149.48 : x
2. Step 2: Convert to fraction form
   2,555.31/3,831.43 = 1,149.48/x
3. Step 3: Cross multiply
   2,555.31x = 3,831.43 × 1,149.48
4. Step 4: Simplify right side
   2,555.31x = 4,404,152.16
5. Step 5: Solve for x
   x = 4,404,152.16/2,555.31
6. Step 6: Final answer
   x = 1,723.53