Finding the Fourth Proportional to 3,945.82, 5,445.48 and 2,177.43

Step by Step Solution

1. Step 1: Write the proportion equation
   3,945.82 : 5,445.48 = 2,177.43 : x
2. Step 2: Convert to fraction form
   3,945.82/5,445.48 = 2,177.43/x
3. Step 3: Cross multiply
   3,945.82x = 5,445.48 × 2,177.43
4. Step 4: Simplify right side
   3,945.82x = 11,857,151.52
5. Step 5: Solve for x
   x = 11,857,151.52/3,945.82
6. Step 6: Final answer
   x = 3,004.99