Finding the Fourth Proportional to 1,016.71, 1,403.06 and 550.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.71 : 1,403.06 = 550.96 : x
2. Step 2: Convert to fraction form
   1,016.71/1,403.06 = 550.96/x
3. Step 3: Cross multiply
   1,016.71x = 1,403.06 × 550.96
4. Step 4: Simplify right side
   1,016.71x = 773,029.94
5. Step 5: Solve for x
   x = 773,029.94/1,016.71
6. Step 6: Final answer
   x = 760.32