Finding the Fourth Proportional to 1,617.30, 2,426.67 and 885.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,617.30 : 2,426.67 = 885.96 : x
2. Step 2: Convert to fraction form
   1,617.30/2,426.67 = 885.96/x
3. Step 3: Cross multiply
   1,617.30x = 2,426.67 × 885.96
4. Step 4: Simplify right side
   1,617.30x = 2,149,932.55
5. Step 5: Solve for x
   x = 2,149,932.55/1,617.30
6. Step 6: Final answer
   x = 1,329.33