Finding the Fourth Proportional to 2,850.93, 3,930.39 and 2,788.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,850.93 : 3,930.39 = 2,788.83 : x
2. Step 2: Convert to fraction form
   2,850.93/3,930.39 = 2,788.83/x
3. Step 3: Cross multiply
   2,850.93x = 3,930.39 × 2,788.83
4. Step 4: Simplify right side
   2,850.93x = 10,961,189.54
5. Step 5: Solve for x
   x = 10,961,189.54/2,850.93
6. Step 6: Final answer
   x = 3,844.78