Finding the Fourth Proportional to 1,969.91, 2,718.37 and 1,085.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,969.91 : 2,718.37 = 1,085.54 : x
2. Step 2: Convert to fraction form
   1,969.91/2,718.37 = 1,085.54/x
3. Step 3: Cross multiply
   1,969.91x = 2,718.37 × 1,085.54
4. Step 4: Simplify right side
   1,969.91x = 2,950,899.37
5. Step 5: Solve for x
   x = 2,950,899.37/1,969.91
6. Step 6: Final answer
   x = 1,497.99