Finding the Fourth Proportional to 2,081.27, 2,869.17 and 1,284.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.27 : 2,869.17 = 1,284.06 : x
2. Step 2: Convert to fraction form
   2,081.27/2,869.17 = 1,284.06/x
3. Step 3: Cross multiply
   2,081.27x = 2,869.17 × 1,284.06
4. Step 4: Simplify right side
   2,081.27x = 3,684,170.86
5. Step 5: Solve for x
   x = 3,684,170.86/2,081.27
6. Step 6: Final answer
   x = 1,770.16