Finding the Fourth Proportional to 3,810.72, 5,258.52 and 2,238.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,810.72 : 5,258.52 = 2,238.60 : x
2. Step 2: Convert to fraction form
   3,810.72/5,258.52 = 2,238.60/x
3. Step 3: Cross multiply
   3,810.72x = 5,258.52 × 2,238.60
4. Step 4: Simplify right side
   3,810.72x = 11,771,722.87
5. Step 5: Solve for x
   x = 11,771,722.87/3,810.72
6. Step 6: Final answer
   x = 3,089.11