Finding the Fourth Proportional to 2,111.52, 2,913.27 and 1,831.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.52 : 2,913.27 = 1,831.31 : x
2. Step 2: Convert to fraction form
   2,111.52/2,913.27 = 1,831.31/x
3. Step 3: Cross multiply
   2,111.52x = 2,913.27 × 1,831.31
4. Step 4: Simplify right side
   2,111.52x = 5,335,089.97
5. Step 5: Solve for x
   x = 5,335,089.97/2,111.52
6. Step 6: Final answer
   x = 2,526.66