Finding the Fourth Proportional to 2,287.92, 3,157.16 and 1,293.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,287.92 : 3,157.16 = 1,293.30 : x
2. Step 2: Convert to fraction form
   2,287.92/3,157.16 = 1,293.30/x
3. Step 3: Cross multiply
   2,287.92x = 3,157.16 × 1,293.30
4. Step 4: Simplify right side
   2,287.92x = 4,083,155.03
5. Step 5: Solve for x
   x = 4,083,155.03/2,287.92
6. Step 6: Final answer
   x = 1,784.66