Finding the Fourth Proportional to 1,078.52, 1,618.28 and 531.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,078.52 : 1,618.28 = 531.16 : x
2. Step 2: Convert to fraction form
   1,078.52/1,618.28 = 531.16/x
3. Step 3: Cross multiply
   1,078.52x = 1,618.28 × 531.16
4. Step 4: Simplify right side
   1,078.52x = 859,560.90
5. Step 5: Solve for x
   x = 859,560.90/1,078.52
6. Step 6: Final answer
   x = 796.99