Finding the Fourth Proportional to 3,928.15, 5,892.12 and 966.62

Step by Step Solution

1. Step 1: Write the proportion equation
   3,928.15 : 5,892.12 = 966.62 : x
2. Step 2: Convert to fraction form
   3,928.15/5,892.12 = 966.62/x
3. Step 3: Cross multiply
   3,928.15x = 5,892.12 × 966.62
4. Step 4: Simplify right side
   3,928.15x = 5,695,441.03
5. Step 5: Solve for x
   x = 5,695,441.03/3,928.15
6. Step 6: Final answer
   x = 1,449.90