Finding the Fourth Proportional to 2,159.34, 3,240.18 and 1,005

Step by Step Solution

1. Step 1: Write the proportion equation
   2,159.34 : 3,240.18 = 1,005 : x
2. Step 2: Convert to fraction form
   2,159.34/3,240.18 = 1,005/x
3. Step 3: Cross multiply
   2,159.34x = 3,240.18 × 1,005
4. Step 4: Simplify right side
   2,159.34x = 3,256,380.90
5. Step 5: Solve for x
   x = 3,256,380.90/2,159.34
6. Step 6: Final answer
   x = 1,508.04