Finding the Fourth Proportional to 2,288.66, 3,158.28 and 1,293.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,288.66 : 3,158.28 = 1,293.88 : x
2. Step 2: Convert to fraction form
   2,288.66/3,158.28 = 1,293.88/x
3. Step 3: Cross multiply
   2,288.66x = 3,158.28 × 1,293.88
4. Step 4: Simplify right side
   2,288.66x = 4,086,435.33
5. Step 5: Solve for x
   x = 4,086,435.33/2,288.66
6. Step 6: Final answer
   x = 1,785.51