Finding the Fourth Proportional to 2,940.78, 4,411.55 and 965.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,940.78 : 4,411.55 = 965.73 : x
2. Step 2: Convert to fraction form
   2,940.78/4,411.55 = 965.73/x
3. Step 3: Cross multiply
   2,940.78x = 4,411.55 × 965.73
4. Step 4: Simplify right side
   2,940.78x = 4,260,366.18
5. Step 5: Solve for x
   x = 4,260,366.18/2,940.78
6. Step 6: Final answer
   x = 1,448.72