Finding the Fourth Proportional to 2,288.76, 3,158.50 and 1,240.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,288.76 : 3,158.50 = 1,240.82 : x
2. Step 2: Convert to fraction form
   2,288.76/3,158.50 = 1,240.82/x
3. Step 3: Cross multiply
   2,288.76x = 3,158.50 × 1,240.82
4. Step 4: Simplify right side
   2,288.76x = 3,919,129.97
5. Step 5: Solve for x
   x = 3,919,129.97/2,288.76
6. Step 6: Final answer
   x = 1,712.34