Finding the Fourth Proportional to 3,940.20, 5,437.73 and 2,262.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,940.20 : 5,437.73 = 2,262.15 : x
2. Step 2: Convert to fraction form
   3,940.20/5,437.73 = 2,262.15/x
3. Step 3: Cross multiply
   3,940.20x = 5,437.73 × 2,262.15
4. Step 4: Simplify right side
   3,940.20x = 12,300,966.57
5. Step 5: Solve for x
   x = 12,300,966.57/3,940.20
6. Step 6: Final answer
   x = 3,121.91