Finding the Fourth Proportional to 2,604.72, 3,906.96 and 961.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,604.72 : 3,906.96 = 961.16 : x
2. Step 2: Convert to fraction form
   2,604.72/3,906.96 = 961.16/x
3. Step 3: Cross multiply
   2,604.72x = 3,906.96 × 961.16
4. Step 4: Simplify right side
   2,604.72x = 3,755,213.67
5. Step 5: Solve for x
   x = 3,755,213.67/2,604.72
6. Step 6: Final answer
   x = 1,441.70