Finding the Fourth Proportional to 2,081.30, 3,105.65 and 2,069.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.30 : 3,105.65 = 2,069.15 : x
2. Step 2: Convert to fraction form
   2,081.30/3,105.65 = 2,069.15/x
3. Step 3: Cross multiply
   2,081.30x = 3,105.65 × 2,069.15
4. Step 4: Simplify right side
   2,081.30x = 6,426,045.35
5. Step 5: Solve for x
   x = 6,426,045.35/2,081.30
6. Step 6: Final answer
   x = 3,087.52