Finding the Fourth Proportional to 2,235.04, 3,354.38 and 1,139.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,235.04 : 3,354.38 = 1,139.71 : x
2. Step 2: Convert to fraction form
   2,235.04/3,354.38 = 1,139.71/x
3. Step 3: Cross multiply
   2,235.04x = 3,354.38 × 1,139.71
4. Step 4: Simplify right side
   2,235.04x = 3,823,020.43
5. Step 5: Solve for x
   x = 3,823,020.43/2,235.04
6. Step 6: Final answer
   x = 1,710.49