Finding the Fourth Proportional to 2,158.88, 2,979.25 and 1,227.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158.88 : 2,979.25 = 1,227.38 : x
2. Step 2: Convert to fraction form
   2,158.88/2,979.25 = 1,227.38/x
3. Step 3: Cross multiply
   2,158.88x = 2,979.25 × 1,227.38
4. Step 4: Simplify right side
   2,158.88x = 3,656,653.90
5. Step 5: Solve for x
   x = 3,656,653.90/2,158.88
6. Step 6: Final answer
   x = 1,693.78