Finding the Fourth Proportional to 2,605.37, 3,909.57 and 963.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,605.37 : 3,909.57 = 963.06 : x
2. Step 2: Convert to fraction form
   2,605.37/3,909.57 = 963.06/x
3. Step 3: Cross multiply
   2,605.37x = 3,909.57 × 963.06
4. Step 4: Simplify right side
   2,605.37x = 3,765,132.21
5. Step 5: Solve for x
   x = 3,765,132.21/2,605.37
6. Step 6: Final answer
   x = 1,445.15