Finding the Fourth Proportional to 2,242.30, 3,338.28 and 2,231.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,242.30 : 3,338.28 = 2,231.50 : x
2. Step 2: Convert to fraction form
   2,242.30/3,338.28 = 2,231.50/x
3. Step 3: Cross multiply
   2,242.30x = 3,338.28 × 2,231.50
4. Step 4: Simplify right side
   2,242.30x = 7,449,371.82
5. Step 5: Solve for x
   x = 7,449,371.82/2,242.30
6. Step 6: Final answer
   x = 3,322.20