Finding the Fourth Proportional to 2,345.24, 3,519.59 and 1,112.65

Step by Step Solution

1. Step 1: Write the proportion equation
   2,345.24 : 3,519.59 = 1,112.65 : x
2. Step 2: Convert to fraction form
   2,345.24/3,519.59 = 1,112.65/x
3. Step 3: Cross multiply
   2,345.24x = 3,519.59 × 1,112.65
4. Step 4: Simplify right side
   2,345.24x = 3,916,048.65
5. Step 5: Solve for x
   x = 3,916,048.65/2,345.24
6. Step 6: Final answer
   x = 1,669.79