Finding the Fourth Proportional to 1,016.57, 1,402.86 and 550.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.57 : 1,402.86 = 550.82 : x
2. Step 2: Convert to fraction form
   1,016.57/1,402.86 = 550.82/x
3. Step 3: Cross multiply
   1,016.57x = 1,402.86 × 550.82
4. Step 4: Simplify right side
   1,016.57x = 772,716.33
5. Step 5: Solve for x
   x = 772,716.33/1,016.57
6. Step 6: Final answer
   x = 760.12