Finding the Fourth Proportional to 2,081.55, 2,873.82 and 1,981.65

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.55 : 2,873.82 = 1,981.65 : x
2. Step 2: Convert to fraction form
   2,081.55/2,873.82 = 1,981.65/x
3. Step 3: Cross multiply
   2,081.55x = 2,873.82 × 1,981.65
4. Step 4: Simplify right side
   2,081.55x = 5,694,893.51
5. Step 5: Solve for x
   x = 5,694,893.51/2,081.55
6. Step 6: Final answer
   x = 2,735.89