Finding the Fourth Proportional to 1,969.46, 2,717.92 and 1,085.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,969.46 : 2,717.92 = 1,085.30 : x
2. Step 2: Convert to fraction form
   1,969.46/2,717.92 = 1,085.30/x
3. Step 3: Cross multiply
   1,969.46x = 2,717.92 × 1,085.30
4. Step 4: Simplify right side
   1,969.46x = 2,949,742.27
5. Step 5: Solve for x
   x = 2,949,742.27/1,969.46
6. Step 6: Final answer
   x = 1,497.74