Finding the Fourth Proportional to 1,969.98, 2,718.52 and 1,085.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,969.98 : 2,718.52 = 1,085.77 : x
2. Step 2: Convert to fraction form
   1,969.98/2,718.52 = 1,085.77/x
3. Step 3: Cross multiply
   1,969.98x = 2,718.52 × 1,085.77
4. Step 4: Simplify right side
   1,969.98x = 2,951,687.46
5. Step 5: Solve for x
   x = 2,951,687.46/1,969.98
6. Step 6: Final answer
   x = 1,498.33