Finding the Fourth Proportional to 3,953.94, 5,456.38 and 2,185.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,953.94 : 5,456.38 = 2,185.50 : x
2. Step 2: Convert to fraction form
   3,953.94/5,456.38 = 2,185.50/x
3. Step 3: Cross multiply
   3,953.94x = 5,456.38 × 2,185.50
4. Step 4: Simplify right side
   3,953.94x = 11,924,918.49
5. Step 5: Solve for x
   x = 11,924,918.49/3,953.94
6. Step 6: Final answer
   x = 3,015.96