Finding the Fourth Proportional to 2,234.33, 3,353.12 and 1,139.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,234.33 : 3,353.12 = 1,139.61 : x
2. Step 2: Convert to fraction form
   2,234.33/3,353.12 = 1,139.61/x
3. Step 3: Cross multiply
   2,234.33x = 3,353.12 × 1,139.61
4. Step 4: Simplify right side
   2,234.33x = 3,821,243.39
5. Step 5: Solve for x
   x = 3,821,243.39/2,234.33
6. Step 6: Final answer
   x = 1,710.25