Finding the Fourth Proportional to 2,080.52, 2,870.98 and 1,639.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080.52 : 2,870.98 = 1,639.56 : x
2. Step 2: Convert to fraction form
   2,080.52/2,870.98 = 1,639.56/x
3. Step 3: Cross multiply
   2,080.52x = 2,870.98 × 1,639.56
4. Step 4: Simplify right side
   2,080.52x = 4,707,143.97
5. Step 5: Solve for x
   x = 4,707,143.97/2,080.52
6. Step 6: Final answer
   x = 2,262.48