Finding the Fourth Proportional to 3,953.75, 5,456.10 and 2,185.37

Step by Step Solution

1. Step 1: Write the proportion equation
   3,953.75 : 5,456.10 = 2,185.37 : x
2. Step 2: Convert to fraction form
   3,953.75/5,456.10 = 2,185.37/x
3. Step 3: Cross multiply
   3,953.75x = 5,456.10 × 2,185.37
4. Step 4: Simplify right side
   3,953.75x = 11,923,569.98
5. Step 5: Solve for x
   x = 11,923,569.98/3,953.75
6. Step 6: Final answer
   x = 3,015.77