Finding the Fourth Proportional to 1,614.20, 2,227.98 and 915.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,614.20 : 2,227.98 = 915.98 : x
2. Step 2: Convert to fraction form
   1,614.20/2,227.98 = 915.98/x
3. Step 3: Cross multiply
   1,614.20x = 2,227.98 × 915.98
4. Step 4: Simplify right side
   1,614.20x = 2,040,773.98
5. Step 5: Solve for x
   x = 2,040,773.98/1,614.20
6. Step 6: Final answer
   x = 1,264.27