Finding the Fourth Proportional to 1,016.32, 1,402.53 and 550.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.32 : 1,402.53 = 550.57 : x
2. Step 2: Convert to fraction form
   1,016.32/1,402.53 = 550.57/x
3. Step 3: Cross multiply
   1,016.32x = 1,402.53 × 550.57
4. Step 4: Simplify right side
   1,016.32x = 772,190.94
5. Step 5: Solve for x
   x = 772,190.94/1,016.32
6. Step 6: Final answer
   x = 759.79