Finding the Fourth Proportional to 1,969.91, 2,718.47 and 1,085.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,969.91 : 2,718.47 = 1,085.71 : x
2. Step 2: Convert to fraction form
   1,969.91/2,718.47 = 1,085.71/x
3. Step 3: Cross multiply
   1,969.91x = 2,718.47 × 1,085.71
4. Step 4: Simplify right side
   1,969.91x = 2,951,470.06
5. Step 5: Solve for x
   x = 2,951,470.06/1,969.91
6. Step 6: Final answer
   x = 1,498.28