Finding the Fourth Proportional to 3,821.47, 5,273.37 and 2,142.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,821.47 : 5,273.37 = 2,142.86 : x
2. Step 2: Convert to fraction form
   3,821.47/5,273.37 = 2,142.86/x
3. Step 3: Cross multiply
   3,821.47x = 5,273.37 × 2,142.86
4. Step 4: Simplify right side
   3,821.47x = 11,300,093.64
5. Step 5: Solve for x
   x = 11,300,093.64/3,821.47
6. Step 6: Final answer
   x = 2,957.00