Finding the Fourth Proportional to 1,969.38, 2,717.82 and 1,085.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,969.38 : 2,717.82 = 1,085.28 : x
2. Step 2: Convert to fraction form
   1,969.38/2,717.82 = 1,085.28/x
3. Step 3: Cross multiply
   1,969.38x = 2,717.82 × 1,085.28
4. Step 4: Simplify right side
   1,969.38x = 2,949,595.69
5. Step 5: Solve for x
   x = 2,949,595.69/1,969.38
6. Step 6: Final answer
   x = 1,497.73