Finding the Fourth Proportional to 2,288.69, 3,158.37 and 1,293.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,288.69 : 3,158.37 = 1,293.96 : x
2. Step 2: Convert to fraction form
   2,288.69/3,158.37 = 1,293.96/x
3. Step 3: Cross multiply
   2,288.69x = 3,158.37 × 1,293.96
4. Step 4: Simplify right side
   2,288.69x = 4,086,816.29
5. Step 5: Solve for x
   x = 4,086,816.29/2,288.69
6. Step 6: Final answer
   x = 1,785.66