Finding the Fourth Proportional to 2,607.05, 3,911.16 and 963.65

Step by Step Solution

1. Step 1: Write the proportion equation
   2,607.05 : 3,911.16 = 963.65 : x
2. Step 2: Convert to fraction form
   2,607.05/3,911.16 = 963.65/x
3. Step 3: Cross multiply
   2,607.05x = 3,911.16 × 963.65
4. Step 4: Simplify right side
   2,607.05x = 3,768,989.33
5. Step 5: Solve for x
   x = 3,768,989.33/2,607.05
6. Step 6: Final answer
   x = 1,445.69