Finding the Fourth Proportional to 2,608.94, 3,913.96 and 965.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,608.94 : 3,913.96 = 965.50 : x
2. Step 2: Convert to fraction form
   2,608.94/3,913.96 = 965.50/x
3. Step 3: Cross multiply
   2,608.94x = 3,913.96 × 965.50
4. Step 4: Simplify right side
   2,608.94x = 3,778,928.38
5. Step 5: Solve for x
   x = 3,778,928.38/2,608.94
6. Step 6: Final answer
   x = 1,448.45