Finding the Fourth Proportional to 2,540.95, 3,805.76 and 2,152.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,540.95 : 3,805.76 = 2,152.15 : x
2. Step 2: Convert to fraction form
   2,540.95/3,805.76 = 2,152.15/x
3. Step 3: Cross multiply
   2,540.95x = 3,805.76 × 2,152.15
4. Step 4: Simplify right side
   2,540.95x = 8,190,555.62
5. Step 5: Solve for x
   x = 8,190,555.62/2,540.95
6. Step 6: Final answer
   x = 3,223.42