Finding the Fourth Proportional to 2,080.30, 2,870.44 and 1,282.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080.30 : 2,870.44 = 1,282.98 : x
2. Step 2: Convert to fraction form
   2,080.30/2,870.44 = 1,282.98/x
3. Step 3: Cross multiply
   2,080.30x = 2,870.44 × 1,282.98
4. Step 4: Simplify right side
   2,080.30x = 3,682,722.65
5. Step 5: Solve for x
   x = 3,682,722.65/2,080.30
6. Step 6: Final answer
   x = 1,770.29