Finding the Fourth Proportional to 2,815.25, 4,223.37 and 966.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,815.25 : 4,223.37 = 966.56 : x
2. Step 2: Convert to fraction form
   2,815.25/4,223.37 = 966.56/x
3. Step 3: Cross multiply
   2,815.25x = 4,223.37 × 966.56
4. Step 4: Simplify right side
   2,815.25x = 4,082,140.51
5. Step 5: Solve for x
   x = 4,082,140.51/2,815.25
6. Step 6: Final answer
   x = 1,450.01