Finding the Fourth Proportional to 2,859.22, 3,945.99 and 2,635.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,859.22 : 3,945.99 = 2,635.86 : x
2. Step 2: Convert to fraction form
   2,859.22/3,945.99 = 2,635.86/x
3. Step 3: Cross multiply
   2,859.22x = 3,945.99 × 2,635.86
4. Step 4: Simplify right side
   2,859.22x = 10,401,077.20
5. Step 5: Solve for x
   x = 10,401,077.20/2,859.22
6. Step 6: Final answer
   x = 3,637.73