Finding the Fourth Proportional to 3,997.15, 5,515.86 and 2,228.41

Step by Step Solution

1. Step 1: Write the proportion equation
   3,997.15 : 5,515.86 = 2,228.41 : x
2. Step 2: Convert to fraction form
   3,997.15/5,515.86 = 2,228.41/x
3. Step 3: Cross multiply
   3,997.15x = 5,515.86 × 2,228.41
4. Step 4: Simplify right side
   3,997.15x = 12,291,597.58
5. Step 5: Solve for x
   x = 12,291,597.58/3,997.15
6. Step 6: Final answer
   x = 3,075.09