Finding the Fourth Proportional to 1,969.76, 2,718.28 and 1,085.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,969.76 : 2,718.28 = 1,085.56 : x
2. Step 2: Convert to fraction form
   1,969.76/2,718.28 = 1,085.56/x
3. Step 3: Cross multiply
   1,969.76x = 2,718.28 × 1,085.56
4. Step 4: Simplify right side
   1,969.76x = 2,950,856.04
5. Step 5: Solve for x
   x = 2,950,856.04/1,969.76
6. Step 6: Final answer
   x = 1,498.08