Finding the Fourth Proportional to 1,015.33, 1,401.15 and 549.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,015.33 : 1,401.15 = 549.58 : x
2. Step 2: Convert to fraction form
   1,015.33/1,401.15 = 549.58/x
3. Step 3: Cross multiply
   1,015.33x = 1,401.15 × 549.58
4. Step 4: Simplify right side
   1,015.33x = 770,044.02
5. Step 5: Solve for x
   x = 770,044.02/1,015.33
6. Step 6: Final answer
   x = 758.42