Finding the Fourth Proportional to 3,168.81, 4,748.61 and 2,180.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,168.81 : 4,748.61 = 2,180.61 : x
2. Step 2: Convert to fraction form
   3,168.81/4,748.61 = 2,180.61/x
3. Step 3: Cross multiply
   3,168.81x = 4,748.61 × 2,180.61
4. Step 4: Simplify right side
   3,168.81x = 10,354,866.45
5. Step 5: Solve for x
   x = 10,354,866.45/3,168.81
6. Step 6: Final answer
   x = 3,267.75