Finding the Fourth Proportional to 1,568.88, 2,165.72 and 1,127.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,568.88 : 2,165.72 = 1,127.92 : x
2. Step 2: Convert to fraction form
   1,568.88/2,165.72 = 1,127.92/x
3. Step 3: Cross multiply
   1,568.88x = 2,165.72 × 1,127.92
4. Step 4: Simplify right side
   1,568.88x = 2,442,758.90
5. Step 5: Solve for x
   x = 2,442,758.90/1,568.88
6. Step 6: Final answer
   x = 1,557.01