Finding the Fourth Proportional to 2,134.56, 3,198.48 and 1,648.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,134.56 : 3,198.48 = 1,648.80 : x
2. Step 2: Convert to fraction form
   2,134.56/3,198.48 = 1,648.80/x
3. Step 3: Cross multiply
   2,134.56x = 3,198.48 × 1,648.80
4. Step 4: Simplify right side
   2,134.56x = 5,273,653.82
5. Step 5: Solve for x
   x = 5,273,653.82/2,134.56
6. Step 6: Final answer
   x = 2,470.60