Finding the Fourth Proportional to 3,401.28, 5,101.72 and 935.92

Step by Step Solution

1. Step 1: Write the proportion equation
   3,401.28 : 5,101.72 = 935.92 : x
2. Step 2: Convert to fraction form
   3,401.28/5,101.72 = 935.92/x
3. Step 3: Cross multiply
   3,401.28x = 5,101.72 × 935.92
4. Step 4: Simplify right side
   3,401.28x = 4,774,801.78
5. Step 5: Solve for x
   x = 4,774,801.78/3,401.28
6. Step 6: Final answer
   x = 1,403.82