Finding the Fourth Proportional to 2,081.43, 3,126.60 and 1,260.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.43 : 3,126.60 = 1,260.09 : x
2. Step 2: Convert to fraction form
   2,081.43/3,126.60 = 1,260.09/x
3. Step 3: Cross multiply
   2,081.43x = 3,126.60 × 1,260.09
4. Step 4: Simplify right side
   2,081.43x = 3,939,797.39
5. Step 5: Solve for x
   x = 3,939,797.39/2,081.43
6. Step 6: Final answer
   x = 1,892.83