Finding the Fourth Proportional to 2,288.63, 3,158.23 and 1,293.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,288.63 : 3,158.23 = 1,293.89 : x
2. Step 2: Convert to fraction form
   2,288.63/3,158.23 = 1,293.89/x
3. Step 3: Cross multiply
   2,288.63x = 3,158.23 × 1,293.89
4. Step 4: Simplify right side
   2,288.63x = 4,086,402.21
5. Step 5: Solve for x
   x = 4,086,402.21/2,288.63
6. Step 6: Final answer
   x = 1,785.52