Finding the Fourth Proportional to 2,144.31, 3,215.04 and 1,103.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,144.31 : 3,215.04 = 1,103.46 : x
2. Step 2: Convert to fraction form
   2,144.31/3,215.04 = 1,103.46/x
3. Step 3: Cross multiply
   2,144.31x = 3,215.04 × 1,103.46
4. Step 4: Simplify right side
   2,144.31x = 3,547,668.04
5. Step 5: Solve for x
   x = 3,547,668.04/2,144.31
6. Step 6: Final answer
   x = 1,654.46