Finding the Fourth Proportional to 2,616.50, 3,613.12 and 1,952.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,616.50 : 3,613.12 = 1,952.21 : x
2. Step 2: Convert to fraction form
   2,616.50/3,613.12 = 1,952.21/x
3. Step 3: Cross multiply
   2,616.50x = 3,613.12 × 1,952.21
4. Step 4: Simplify right side
   2,616.50x = 7,053,546.05
5. Step 5: Solve for x
   x = 7,053,546.05/2,616.50
6. Step 6: Final answer
   x = 2,695.79