Finding the Fourth Proportional to 1,969.57, 2,717.90 and 1,085.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,969.57 : 2,717.90 = 1,085.35 : x
2. Step 2: Convert to fraction form
   1,969.57/2,717.90 = 1,085.35/x
3. Step 3: Cross multiply
   1,969.57x = 2,717.90 × 1,085.35
4. Step 4: Simplify right side
   1,969.57x = 2,949,872.77
5. Step 5: Solve for x
   x = 2,949,872.77/1,969.57
6. Step 6: Final answer
   x = 1,497.72