Finding the Fourth Proportional to 1,078.59, 1,618.52 and 501.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,078.59 : 1,618.52 = 501.47 : x
2. Step 2: Convert to fraction form
   1,078.59/1,618.52 = 501.47/x
3. Step 3: Cross multiply
   1,078.59x = 1,618.52 × 501.47
4. Step 4: Simplify right side
   1,078.59x = 811,628.62
5. Step 5: Solve for x
   x = 811,628.62/1,078.59
6. Step 6: Final answer
   x = 752.49