Finding the Fourth Proportional to 1,016.23, 1,402.39 and 550.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.23 : 1,402.39 = 550.48 : x
2. Step 2: Convert to fraction form
   1,016.23/1,402.39 = 550.48/x
3. Step 3: Cross multiply
   1,016.23x = 1,402.39 × 550.48
4. Step 4: Simplify right side
   1,016.23x = 771,984.55
5. Step 5: Solve for x
   x = 771,984.55/1,016.23
6. Step 6: Final answer
   x = 759.66