Finding the Fourth Proportional to 2,634.10, 3,623.88 and 2,561.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,634.10 : 3,623.88 = 2,561.20 : x
2. Step 2: Convert to fraction form
   2,634.10/3,623.88 = 2,561.20/x
3. Step 3: Cross multiply
   2,634.10x = 3,623.88 × 2,561.20
4. Step 4: Simplify right side
   2,634.10x = 9,281,481.46
5. Step 5: Solve for x
   x = 9,281,481.46/2,634.10
6. Step 6: Final answer
   x = 3,523.59