Finding the Fourth Proportional to 2,179.29, 3,008.54 and 1,680.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,179.29 : 3,008.54 = 1,680.81 : x
2. Step 2: Convert to fraction form
   2,179.29/3,008.54 = 1,680.81/x
3. Step 3: Cross multiply
   2,179.29x = 3,008.54 × 1,680.81
4. Step 4: Simplify right side
   2,179.29x = 5,056,775.71
5. Step 5: Solve for x
   x = 5,056,775.71/2,179.29
6. Step 6: Final answer
   x = 2,320.38