Finding the Fourth Proportional to 2,935.63, 4,402.33 and 960.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,935.63 : 4,402.33 = 960.78 : x
2. Step 2: Convert to fraction form
   2,935.63/4,402.33 = 960.78/x
3. Step 3: Cross multiply
   2,935.63x = 4,402.33 × 960.78
4. Step 4: Simplify right side
   2,935.63x = 4,229,670.62
5. Step 5: Solve for x
   x = 4,229,670.62/2,935.63
6. Step 6: Final answer
   x = 1,440.81