Finding the Fourth Proportional to 2,538.38, 3,807.18 and 979.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,538.38 : 3,807.18 = 979.12 : x
2. Step 2: Convert to fraction form
   2,538.38/3,807.18 = 979.12/x
3. Step 3: Cross multiply
   2,538.38x = 3,807.18 × 979.12
4. Step 4: Simplify right side
   2,538.38x = 3,727,669.43
5. Step 5: Solve for x
   x = 3,727,669.43/2,538.38
6. Step 6: Final answer
   x = 1,468.52