Finding the Fourth Proportional to 2,339.38, 3,228.89 and 1,345.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,339.38 : 3,228.89 = 1,345.23 : x
2. Step 2: Convert to fraction form
   2,339.38/3,228.89 = 1,345.23/x
3. Step 3: Cross multiply
   2,339.38x = 3,228.89 × 1,345.23
4. Step 4: Simplify right side
   2,339.38x = 4,343,605.83
5. Step 5: Solve for x
   x = 4,343,605.83/2,339.38
6. Step 6: Final answer
   x = 1,856.73