Finding the Fourth Proportional to 2,169.52, 3,257.31 and 1,345.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,169.52 : 3,257.31 = 1,345.30 : x
2. Step 2: Convert to fraction form
   2,169.52/3,257.31 = 1,345.30/x
3. Step 3: Cross multiply
   2,169.52x = 3,257.31 × 1,345.30
4. Step 4: Simplify right side
   2,169.52x = 4,382,059.14
5. Step 5: Solve for x
   x = 4,382,059.14/2,169.52
6. Step 6: Final answer
   x = 2,019.83