Finding the Fourth Proportional to 3,945.69, 5,444.82 and 2,177.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,945.69 : 5,444.82 = 2,177.28 : x
2. Step 2: Convert to fraction form
   3,945.69/5,444.82 = 2,177.28/x
3. Step 3: Cross multiply
   3,945.69x = 5,444.82 × 2,177.28
4. Step 4: Simplify right side
   3,945.69x = 11,854,897.69
5. Step 5: Solve for x
   x = 11,854,897.69/3,945.69
6. Step 6: Final answer
   x = 3,004.52