Finding the Fourth Proportional to 3,981.56, 5,971.52 and 2,228.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,981.56 : 5,971.52 = 2,228.31 : x
2. Step 2: Convert to fraction form
   3,981.56/5,971.52 = 2,228.31/x
3. Step 3: Cross multiply
   3,981.56x = 5,971.52 × 2,228.31
4. Step 4: Simplify right side
   3,981.56x = 13,306,403.30
5. Step 5: Solve for x
   x = 13,306,403.30/3,981.56
6. Step 6: Final answer
   x = 3,342.01