Finding the Fourth Proportional to 3,810.27, 5,258.78 and 2,238.35

Step by Step Solution

1. Step 1: Write the proportion equation
   3,810.27 : 5,258.78 = 2,238.35 : x
2. Step 2: Convert to fraction form
   3,810.27/5,258.78 = 2,238.35/x
3. Step 3: Cross multiply
   3,810.27x = 5,258.78 × 2,238.35
4. Step 4: Simplify right side
   3,810.27x = 11,770,990.21
5. Step 5: Solve for x
   x = 11,770,990.21/3,810.27
6. Step 6: Final answer
   x = 3,089.28