Finding the Fourth Proportional to 2,807.37, 4,198.37 and 2,105.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,807.37 : 4,198.37 = 2,105.10 : x
2. Step 2: Convert to fraction form
   2,807.37/4,198.37 = 2,105.10/x
3. Step 3: Cross multiply
   2,807.37x = 4,198.37 × 2,105.10
4. Step 4: Simplify right side
   2,807.37x = 8,837,978.16
5. Step 5: Solve for x
   x = 8,837,978.16/2,807.37
6. Step 6: Final answer
   x = 3,148.13