Finding the Fourth Proportional to 1,617.24, 2,424.06 and 885.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,617.24 : 2,424.06 = 885.18 : x
2. Step 2: Convert to fraction form
   1,617.24/2,424.06 = 885.18/x
3. Step 3: Cross multiply
   1,617.24x = 2,424.06 × 885.18
4. Step 4: Simplify right side
   1,617.24x = 2,145,729.43
5. Step 5: Solve for x
   x = 2,145,729.43/1,617.24
6. Step 6: Final answer
   x = 1,326.78