Finding the Fourth Proportional to 2,331.78, 3,498.27 and 870.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,331.78 : 3,498.27 = 870.94 : x
2. Step 2: Convert to fraction form
   2,331.78/3,498.27 = 870.94/x
3. Step 3: Cross multiply
   2,331.78x = 3,498.27 × 870.94
4. Step 4: Simplify right side
   2,331.78x = 3,046,778.92
5. Step 5: Solve for x
   x = 3,046,778.92/2,331.78
6. Step 6: Final answer
   x = 1,306.64