Finding the Fourth Proportional to 2,069.27, 3,105.95 and 1,289.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,069.27 : 3,105.95 = 1,289.47 : x
2. Step 2: Convert to fraction form
   2,069.27/3,105.95 = 1,289.47/x
3. Step 3: Cross multiply
   2,069.27x = 3,105.95 × 1,289.47
4. Step 4: Simplify right side
   2,069.27x = 4,005,013.82
5. Step 5: Solve for x
   x = 4,005,013.82/2,069.27
6. Step 6: Final answer
   x = 1,935.48