Finding the Fourth Proportional to 2,288.31, 3,157.81 and 1,293.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,288.31 : 3,157.81 = 1,293.56 : x
2. Step 2: Convert to fraction form
   2,288.31/3,157.81 = 1,293.56/x
3. Step 3: Cross multiply
   2,288.31x = 3,157.81 × 1,293.56
4. Step 4: Simplify right side
   2,288.31x = 4,084,816.70
5. Step 5: Solve for x
   x = 4,084,816.70/2,288.31
6. Step 6: Final answer
   x = 1,785.08