Finding the Fourth Proportional to 3,964.29, 5,470.71 and 2,285.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,964.29 : 5,470.71 = 2,285.69 : x
2. Step 2: Convert to fraction form
   3,964.29/5,470.71 = 2,285.69/x
3. Step 3: Cross multiply
   3,964.29x = 5,470.71 × 2,285.69
4. Step 4: Simplify right side
   3,964.29x = 12,504,347.14
5. Step 5: Solve for x
   x = 12,504,347.14/3,964.29
6. Step 6: Final answer
   x = 3,154.25