Finding the Fourth Proportional to 1,016.42, 1,402.68 and 550.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.42 : 1,402.68 = 550.67 : x
2. Step 2: Convert to fraction form
   1,016.42/1,402.68 = 550.67/x
3. Step 3: Cross multiply
   1,016.42x = 1,402.68 × 550.67
4. Step 4: Simplify right side
   1,016.42x = 772,411.04
5. Step 5: Solve for x
   x = 772,411.04/1,016.42
6. Step 6: Final answer
   x = 759.93