Finding the Fourth Proportional to 2,069.30, 3,104.94 and 1,289.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,069.30 : 3,104.94 = 1,289.09 : x
2. Step 2: Convert to fraction form
   2,069.30/3,104.94 = 1,289.09/x
3. Step 3: Cross multiply
   2,069.30x = 3,104.94 × 1,289.09
4. Step 4: Simplify right side
   2,069.30x = 4,002,547.10
5. Step 5: Solve for x
   x = 4,002,547.10/2,069.30
6. Step 6: Final answer
   x = 1,934.25