Finding the Fourth Proportional to 2,288.91, 3,158.90 and 1,294.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,288.91 : 3,158.90 = 1,294.37 : x
2. Step 2: Convert to fraction form
   2,288.91/3,158.90 = 1,294.37/x
3. Step 3: Cross multiply
   2,288.91x = 3,158.90 × 1,294.37
4. Step 4: Simplify right side
   2,288.91x = 4,088,785.39
5. Step 5: Solve for x
   x = 4,088,785.39/2,288.91
6. Step 6: Final answer
   x = 1,786.35