Finding the Fourth Proportional to 2,288.18, 3,157.67 and 1,293.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,288.18 : 3,157.67 = 1,293.78 : x
2. Step 2: Convert to fraction form
   2,288.18/3,157.67 = 1,293.78/x
3. Step 3: Cross multiply
   2,288.18x = 3,157.67 × 1,293.78
4. Step 4: Simplify right side
   2,288.18x = 4,085,330.29
5. Step 5: Solve for x
   x = 4,085,330.29/2,288.18
6. Step 6: Final answer
   x = 1,785.41