Finding the Fourth Proportional to 1,016.74, 1,403.10 and 550.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.74 : 1,403.10 = 550.98 : x
2. Step 2: Convert to fraction form
   1,016.74/1,403.10 = 550.98/x
3. Step 3: Cross multiply
   1,016.74x = 1,403.10 × 550.98
4. Step 4: Simplify right side
   1,016.74x = 773,080.04
5. Step 5: Solve for x
   x = 773,080.04/1,016.74
6. Step 6: Final answer
   x = 760.35