Finding the Fourth Proportional to 2,872.89, 3,966.42 and 2,242.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,872.89 : 3,966.42 = 2,242.31 : x
2. Step 2: Convert to fraction form
   2,872.89/3,966.42 = 2,242.31/x
3. Step 3: Cross multiply
   2,872.89x = 3,966.42 × 2,242.31
4. Step 4: Simplify right side
   2,872.89x = 8,893,923.40
5. Step 5: Solve for x
   x = 8,893,923.40/2,872.89
6. Step 6: Final answer
   x = 3,095.81