Finding the Fourth Proportional to 3,975.54, 5,485.89 and 2,182.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,975.54 : 5,485.89 = 2,182.72 : x
2. Step 2: Convert to fraction form
   3,975.54/5,485.89 = 2,182.72/x
3. Step 3: Cross multiply
   3,975.54x = 5,485.89 × 2,182.72
4. Step 4: Simplify right side
   3,975.54x = 11,974,161.82
5. Step 5: Solve for x
   x = 11,974,161.82/3,975.54
6. Step 6: Final answer
   x = 3,011.96