Finding the Fourth Proportional to 2,081.50, 2,872.72 and 1,335.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.50 : 2,872.72 = 1,335.18 : x
2. Step 2: Convert to fraction form
   2,081.50/2,872.72 = 1,335.18/x
3. Step 3: Cross multiply
   2,081.50x = 2,872.72 × 1,335.18
4. Step 4: Simplify right side
   2,081.50x = 3,835,610.73
5. Step 5: Solve for x
   x = 3,835,610.73/2,081.50
6. Step 6: Final answer
   x = 1,842.72