Finding the Fourth Proportional to 2,608.28, 3,912.20 and 964.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,608.28 : 3,912.20 = 964.52 : x
2. Step 2: Convert to fraction form
   2,608.28/3,912.20 = 964.52/x
3. Step 3: Cross multiply
   2,608.28x = 3,912.20 × 964.52
4. Step 4: Simplify right side
   2,608.28x = 3,773,395.14
5. Step 5: Solve for x
   x = 3,773,395.14/2,608.28
6. Step 6: Final answer
   x = 1,446.70