Finding the Fourth Proportional to 2,815.62, 4,222.41 and 966.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,815.62 : 4,222.41 = 966.23 : x
2. Step 2: Convert to fraction form
   2,815.62/4,222.41 = 966.23/x
3. Step 3: Cross multiply
   2,815.62x = 4,222.41 × 966.23
4. Step 4: Simplify right side
   2,815.62x = 4,079,819.21
5. Step 5: Solve for x
   x = 4,079,819.21/2,815.62
6. Step 6: Final answer
   x = 1,448.99