Finding the Fourth Proportional to 1,401.28, 1,933.41 and 935.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.28 : 1,933.41 = 935.62 : x
2. Step 2: Convert to fraction form
   1,401.28/1,933.41 = 935.62/x
3. Step 3: Cross multiply
   1,401.28x = 1,933.41 × 935.62
4. Step 4: Simplify right side
   1,401.28x = 1,808,937.06
5. Step 5: Solve for x
   x = 1,808,937.06/1,401.28
6. Step 6: Final answer
   x = 1,290.92