Finding the Fourth Proportional to 2,288.37, 3,403.12 and 2,215.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,288.37 : 3,403.12 = 2,215.47 : x
2. Step 2: Convert to fraction form
   2,288.37/3,403.12 = 2,215.47/x
3. Step 3: Cross multiply
   2,288.37x = 3,403.12 × 2,215.47
4. Step 4: Simplify right side
   2,288.37x = 7,539,504.73
5. Step 5: Solve for x
   x = 7,539,504.73/2,288.37
6. Step 6: Final answer
   x = 3,294.71