Finding the Fourth Proportional to 1,015.48, 1,401.37 and 549.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,015.48 : 1,401.37 = 549.73 : x
2. Step 2: Convert to fraction form
   1,015.48/1,401.37 = 549.73/x
3. Step 3: Cross multiply
   1,015.48x = 1,401.37 × 549.73
4. Step 4: Simplify right side
   1,015.48x = 770,374.63
5. Step 5: Solve for x
   x = 770,374.63/1,015.48
6. Step 6: Final answer
   x = 758.63