Finding the Fourth Proportional to 2,895.29, 3,993.69 and 2,138.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,895.29 : 3,993.69 = 2,138.30 : x
2. Step 2: Convert to fraction form
   2,895.29/3,993.69 = 2,138.30/x
3. Step 3: Cross multiply
   2,895.29x = 3,993.69 × 2,138.30
4. Step 4: Simplify right side
   2,895.29x = 8,539,707.33
5. Step 5: Solve for x
   x = 8,539,707.33/2,895.29
6. Step 6: Final answer
   x = 2,949.52