Finding the Fourth Proportional to 2,607.36, 3,912.56 and 965.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,607.36 : 3,912.56 = 965.06 : x
2. Step 2: Convert to fraction form
   2,607.36/3,912.56 = 965.06/x
3. Step 3: Cross multiply
   2,607.36x = 3,912.56 × 965.06
4. Step 4: Simplify right side
   2,607.36x = 3,775,855.15
5. Step 5: Solve for x
   x = 3,775,855.15/2,607.36
6. Step 6: Final answer
   x = 1,448.15