Finding the Fourth Proportional to 3,061.28, 4,229.52 and 2,133.92

Step by Step Solution

1. Step 1: Write the proportion equation
   3,061.28 : 4,229.52 = 2,133.92 : x
2. Step 2: Convert to fraction form
   3,061.28/4,229.52 = 2,133.92/x
3. Step 3: Cross multiply
   3,061.28x = 4,229.52 × 2,133.92
4. Step 4: Simplify right side
   3,061.28x = 9,025,457.32
5. Step 5: Solve for x
   x = 9,025,457.32/3,061.28
6. Step 6: Final answer
   x = 2,948.26