Finding the Fourth Proportional to 2,680.45, 4,021.82 and 1,382.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,680.45 : 4,021.82 = 1,382.83 : x
2. Step 2: Convert to fraction form
   2,680.45/4,021.82 = 1,382.83/x
3. Step 3: Cross multiply
   2,680.45x = 4,021.82 × 1,382.83
4. Step 4: Simplify right side
   2,680.45x = 5,561,481.57
5. Step 5: Solve for x
   x = 5,561,481.57/2,680.45
6. Step 6: Final answer
   x = 2,074.83