Finding the Fourth Proportional to 1,016.38, 1,402.60 and 550.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.38 : 1,402.60 = 550.63 : x
2. Step 2: Convert to fraction form
   1,016.38/1,402.60 = 550.63/x
3. Step 3: Cross multiply
   1,016.38x = 1,402.60 × 550.63
4. Step 4: Simplify right side
   1,016.38x = 772,306.63
5. Step 5: Solve for x
   x = 772,306.63/1,016.38
6. Step 6: Final answer
   x = 759.86