Finding the Fourth Proportional to 1,016.21, 1,402.37 and 550.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.21 : 1,402.37 = 550.46 : x
2. Step 2: Convert to fraction form
   1,016.21/1,402.37 = 550.46/x
3. Step 3: Cross multiply
   1,016.21x = 1,402.37 × 550.46
4. Step 4: Simplify right side
   1,016.21x = 771,942.95
5. Step 5: Solve for x
   x = 771,942.95/1,016.21
6. Step 6: Final answer
   x = 759.63