Finding the Fourth Proportional to 2,179.71, 3,004.70 and 1,648.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,179.71 : 3,004.70 = 1,648.76 : x
2. Step 2: Convert to fraction form
   2,179.71/3,004.70 = 1,648.76/x
3. Step 3: Cross multiply
   2,179.71x = 3,004.70 × 1,648.76
4. Step 4: Simplify right side
   2,179.71x = 4,954,005.90
5. Step 5: Solve for x
   x = 4,954,005.90/2,179.71
6. Step 6: Final answer
   x = 2,272.78