Finding the Fourth Proportional to 3,945.17, 5,443.37 and 2,243.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,945.17 : 5,443.37 = 2,243.30 : x
2. Step 2: Convert to fraction form
   3,945.17/5,443.37 = 2,243.30/x
3. Step 3: Cross multiply
   3,945.17x = 5,443.37 × 2,243.30
4. Step 4: Simplify right side
   3,945.17x = 12,211,081.90
5. Step 5: Solve for x
   x = 12,211,081.90/3,945.17
6. Step 6: Final answer
   x = 3,095.20