Finding the Fourth Proportional to 1,015.98, 1,402.05 and 550.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,015.98 : 1,402.05 = 550.23 : x
2. Step 2: Convert to fraction form
   1,015.98/1,402.05 = 550.23/x
3. Step 3: Cross multiply
   1,015.98x = 1,402.05 × 550.23
4. Step 4: Simplify right side
   1,015.98x = 771,452.31
5. Step 5: Solve for x
   x = 771,452.31/1,015.98
6. Step 6: Final answer
   x = 759.32