Finding the Fourth Proportional to 1,960.76, 2,942.10 and 863.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,960.76 : 2,942.10 = 863.82 : x
2. Step 2: Convert to fraction form
   1,960.76/2,942.10 = 863.82/x
3. Step 3: Cross multiply
   1,960.76x = 2,942.10 × 863.82
4. Step 4: Simplify right side
   1,960.76x = 2,541,444.82
5. Step 5: Solve for x
   x = 2,541,444.82/1,960.76
6. Step 6: Final answer
   x = 1,296.15