Finding the Fourth Proportional to 2,145.69, 3,215.16 and 1,363.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.69 : 3,215.16 = 1,363.23 : x
2. Step 2: Convert to fraction form
   2,145.69/3,215.16 = 1,363.23/x
3. Step 3: Cross multiply
   2,145.69x = 3,215.16 × 1,363.23
4. Step 4: Simplify right side
   2,145.69x = 4,383,002.57
5. Step 5: Solve for x
   x = 4,383,002.57/2,145.69
6. Step 6: Final answer
   x = 2,042.70