Finding the Fourth Proportional to 2,784.42, 4,156.31 and 2,581.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,784.42 : 4,156.31 = 2,581.38 : x
2. Step 2: Convert to fraction form
   2,784.42/4,156.31 = 2,581.38/x
3. Step 3: Cross multiply
   2,784.42x = 4,156.31 × 2,581.38
4. Step 4: Simplify right side
   2,784.42x = 10,729,002.60
5. Step 5: Solve for x
   x = 10,729,002.60/2,784.42
6. Step 6: Final answer
   x = 3,853.23