Finding the Fourth Proportional to 2,081.72, 2,850.89 and 2,054.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.72 : 2,850.89 = 2,054.38 : x
2. Step 2: Convert to fraction form
   2,081.72/2,850.89 = 2,054.38/x
3. Step 3: Cross multiply
   2,081.72x = 2,850.89 × 2,054.38
4. Step 4: Simplify right side
   2,081.72x = 5,856,809.41
5. Step 5: Solve for x
   x = 5,856,809.41/2,081.72
6. Step 6: Final answer
   x = 2,813.45