Finding the Fourth Proportional to 2,785.78, 3,845.98 and 2,081.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,785.78 : 3,845.98 = 2,081.50 : x
2. Step 2: Convert to fraction form
   2,785.78/3,845.98 = 2,081.50/x
3. Step 3: Cross multiply
   2,785.78x = 3,845.98 × 2,081.50
4. Step 4: Simplify right side
   2,785.78x = 8,005,400.36
5. Step 5: Solve for x
   x = 8,005,400.36/2,785.78
6. Step 6: Final answer
   x = 2,873.66