Finding the Fourth Proportional to 2,080.98, 2,870.85 and 1,252.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080.98 : 2,870.85 = 1,252.50 : x
2. Step 2: Convert to fraction form
   2,080.98/2,870.85 = 1,252.50/x
3. Step 3: Cross multiply
   2,080.98x = 2,870.85 × 1,252.50
4. Step 4: Simplify right side
   2,080.98x = 3,595,739.63
5. Step 5: Solve for x
   x = 3,595,739.63/2,080.98
6. Step 6: Final answer
   x = 1,727.91