Finding the Fourth Proportional to 2,597.22, 3,900.15 and 2,577.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,597.22 : 3,900.15 = 2,577.06 : x
2. Step 2: Convert to fraction form
   2,597.22/3,900.15 = 2,577.06/x
3. Step 3: Cross multiply
   2,597.22x = 3,900.15 × 2,577.06
4. Step 4: Simplify right side
   2,597.22x = 10,050,920.56
5. Step 5: Solve for x
   x = 10,050,920.56/2,597.22
6. Step 6: Final answer
   x = 3,869.88