Finding the Fourth Proportional to 2,895.21, 3,992.22 and 2,150.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,895.21 : 3,992.22 = 2,150.55 : x
2. Step 2: Convert to fraction form
   2,895.21/3,992.22 = 2,150.55/x
3. Step 3: Cross multiply
   2,895.21x = 3,992.22 × 2,150.55
4. Step 4: Simplify right side
   2,895.21x = 8,585,468.72
5. Step 5: Solve for x
   x = 8,585,468.72/2,895.21
6. Step 6: Final answer
   x = 2,965.40