Finding the Fourth Proportional to 3,380.16, 4,666.76 and 2,185.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,380.16 : 4,666.76 = 2,185.72 : x
2. Step 2: Convert to fraction form
   3,380.16/4,666.76 = 2,185.72/x
3. Step 3: Cross multiply
   3,380.16x = 4,666.76 × 2,185.72
4. Step 4: Simplify right side
   3,380.16x = 10,200,230.67
5. Step 5: Solve for x
   x = 10,200,230.67/3,380.16
6. Step 6: Final answer
   x = 3,017.68