Finding the Fourth Proportional to 1,015.67, 1,401.63 and 549.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,015.67 : 1,401.63 = 549.92 : x
2. Step 2: Convert to fraction form
   1,015.67/1,401.63 = 549.92/x
3. Step 3: Cross multiply
   1,015.67x = 1,401.63 × 549.92
4. Step 4: Simplify right side
   1,015.67x = 770,784.37
5. Step 5: Solve for x
   x = 770,784.37/1,015.67
6. Step 6: Final answer
   x = 758.89