Finding the Fourth Proportional to 1,015.52, 1,401.42 and 549.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,015.52 : 1,401.42 = 549.77 : x
2. Step 2: Convert to fraction form
   1,015.52/1,401.42 = 549.77/x
3. Step 3: Cross multiply
   1,015.52x = 1,401.42 × 549.77
4. Step 4: Simplify right side
   1,015.52x = 770,458.67
5. Step 5: Solve for x
   x = 770,458.67/1,015.52
6. Step 6: Final answer
   x = 758.68