Finding the Fourth Proportional to 1,078.52, 1,616.25 and 530.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,078.52 : 1,616.25 = 530.15 : x
2. Step 2: Convert to fraction form
   1,078.52/1,616.25 = 530.15/x
3. Step 3: Cross multiply
   1,078.52x = 1,616.25 × 530.15
4. Step 4: Simplify right side
   1,078.52x = 856,854.94
5. Step 5: Solve for x
   x = 856,854.94/1,078.52
6. Step 6: Final answer
   x = 794.47