Finding the Fourth Proportional to 1,614.38, 2,227.86 and 915.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,614.38 : 2,227.86 = 915.75 : x
2. Step 2: Convert to fraction form
   1,614.38/2,227.86 = 915.75/x
3. Step 3: Cross multiply
   1,614.38x = 2,227.86 × 915.75
4. Step 4: Simplify right side
   1,614.38x = 2,040,162.80
5. Step 5: Solve for x
   x = 2,040,162.80/1,614.38
6. Step 6: Final answer
   x = 1,263.75