Finding the Fourth Proportional to 1,016.58, 1,402.87 and 550.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.58 : 1,402.87 = 550.83 : x
2. Step 2: Convert to fraction form
   1,016.58/1,402.87 = 550.83/x
3. Step 3: Cross multiply
   1,016.58x = 1,402.87 × 550.83
4. Step 4: Simplify right side
   1,016.58x = 772,733.11
5. Step 5: Solve for x
   x = 772,733.11/1,016.58
6. Step 6: Final answer
   x = 760.13