Finding the Fourth Proportional to 2,343.92, 3,513.06 and 861.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,343.92 : 3,513.06 = 861.95 : x
2. Step 2: Convert to fraction form
   2,343.92/3,513.06 = 861.95/x
3. Step 3: Cross multiply
   2,343.92x = 3,513.06 × 861.95
4. Step 4: Simplify right side
   2,343.92x = 3,028,082.07
5. Step 5: Solve for x
   x = 3,028,082.07/2,343.92
6. Step 6: Final answer
   x = 1,291.89