Finding the Fourth Proportional to 2,288.71, 3,158.57 and 1,293.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,288.71 : 3,158.57 = 1,293.62 : x
2. Step 2: Convert to fraction form
   2,288.71/3,158.57 = 1,293.62/x
3. Step 3: Cross multiply
   2,288.71x = 3,158.57 × 1,293.62
4. Step 4: Simplify right side
   2,288.71x = 4,085,982.86
5. Step 5: Solve for x
   x = 4,085,982.86/2,288.71
6. Step 6: Final answer
   x = 1,785.28