Finding the Fourth Proportional to 1,016.28, 1,402.47 and 550.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.28 : 1,402.47 = 550.53 : x
2. Step 2: Convert to fraction form
   1,016.28/1,402.47 = 550.53/x
3. Step 3: Cross multiply
   1,016.28x = 1,402.47 × 550.53
4. Step 4: Simplify right side
   1,016.28x = 772,101.81
5. Step 5: Solve for x
   x = 772,101.81/1,016.28
6. Step 6: Final answer
   x = 759.73