Finding the Fourth Proportional to 1,969.29, 2,717.61 and 1,085.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,969.29 : 2,717.61 = 1,085.15 : x
2. Step 2: Convert to fraction form
   1,969.29/2,717.61 = 1,085.15/x
3. Step 3: Cross multiply
   1,969.29x = 2,717.61 × 1,085.15
4. Step 4: Simplify right side
   1,969.29x = 2,949,014.49
5. Step 5: Solve for x
   x = 2,949,014.49/1,969.29
6. Step 6: Final answer
   x = 1,497.51