Finding the Fourth Proportional to 2,402.76, 3,601.92 and 863.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,402.76 : 3,601.92 = 863.40 : x
2. Step 2: Convert to fraction form
   2,402.76/3,601.92 = 863.40/x
3. Step 3: Cross multiply
   2,402.76x = 3,601.92 × 863.40
4. Step 4: Simplify right side
   2,402.76x = 3,109,897.73
5. Step 5: Solve for x
   x = 3,109,897.73/2,402.76
6. Step 6: Final answer
   x = 1,294.30