Finding the Fourth Proportional to 1,949.31, 2,689.94 and 1,065.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,949.31 : 2,689.94 = 1,065.12 : x
2. Step 2: Convert to fraction form
   1,949.31/2,689.94 = 1,065.12/x
3. Step 3: Cross multiply
   1,949.31x = 2,689.94 × 1,065.12
4. Step 4: Simplify right side
   1,949.31x = 2,865,103.57
5. Step 5: Solve for x
   x = 2,865,103.57/1,949.31
6. Step 6: Final answer
   x = 1,469.80