Finding the Fourth Proportional to 1,015.58, 1,401.50 and 549.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,015.58 : 1,401.50 = 549.83 : x
2. Step 2: Convert to fraction form
   1,015.58/1,401.50 = 549.83/x
3. Step 3: Cross multiply
   1,015.58x = 1,401.50 × 549.83
4. Step 4: Simplify right side
   1,015.58x = 770,583.24
5. Step 5: Solve for x
   x = 770,583.24/1,015.58
6. Step 6: Final answer
   x = 758.76