Finding the Fourth Proportional to 2,276.24, 3,415.34 and 2,239.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,276.24 : 3,415.34 = 2,239.31 : x
2. Step 2: Convert to fraction form
   2,276.24/3,415.34 = 2,239.31/x
3. Step 3: Cross multiply
   2,276.24x = 3,415.34 × 2,239.31
4. Step 4: Simplify right side
   2,276.24x = 7,648,019.15
5. Step 5: Solve for x
   x = 7,648,019.15/2,276.24
6. Step 6: Final answer
   x = 3,359.94