Finding the Fourth Proportional to 3,953.72, 5,456.49 and 2,185.67

Step by Step Solution

1. Step 1: Write the proportion equation
   3,953.72 : 5,456.49 = 2,185.67 : x
2. Step 2: Convert to fraction form
   3,953.72/5,456.49 = 2,185.67/x
3. Step 3: Cross multiply
   3,953.72x = 5,456.49 × 2,185.67
4. Step 4: Simplify right side
   3,953.72x = 11,926,086.50
5. Step 5: Solve for x
   x = 11,926,086.50/3,953.72
6. Step 6: Final answer
   x = 3,016.42