Finding the Fourth Proportional to 3,821.57, 5,273.47 and 2,142.94

Step by Step Solution

1. Step 1: Write the proportion equation
   3,821.57 : 5,273.47 = 2,142.94 : x
2. Step 2: Convert to fraction form
   3,821.57/5,273.47 = 2,142.94/x
3. Step 3: Cross multiply
   3,821.57x = 5,273.47 × 2,142.94
4. Step 4: Simplify right side
   3,821.57x = 11,300,729.80
5. Step 5: Solve for x
   x = 11,300,729.80/3,821.57
6. Step 6: Final answer
   x = 2,957.09