Finding the Fourth Proportional to 1,016.30, 1,402.50 and 550.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.30 : 1,402.50 = 550.55 : x
2. Step 2: Convert to fraction form
   1,016.30/1,402.50 = 550.55/x
3. Step 3: Cross multiply
   1,016.30x = 1,402.50 × 550.55
4. Step 4: Simplify right side
   1,016.30x = 772,140.96
5. Step 5: Solve for x
   x = 772,140.96/1,016.30
6. Step 6: Final answer
   x = 759.76