Finding the Fourth Proportional to 3,945.99, 5,445.86 and 2,949.54

Step by Step Solution

1. Step 1: Write the proportion equation
   3,945.99 : 5,445.86 = 2,949.54 : x
2. Step 2: Convert to fraction form
   3,945.99/5,445.86 = 2,949.54/x
3. Step 3: Cross multiply
   3,945.99x = 5,445.86 × 2,949.54
4. Step 4: Simplify right side
   3,945.99x = 16,062,767.16
5. Step 5: Solve for x
   x = 16,062,767.16/3,945.99
6. Step 6: Final answer
   x = 4,070.66