Finding the Fourth Proportional to 1,617.57, 2,424.33 and 885.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,617.57 : 2,424.33 = 885.87 : x
2. Step 2: Convert to fraction form
   1,617.57/2,424.33 = 885.87/x
3. Step 3: Cross multiply
   1,617.57x = 2,424.33 × 885.87
4. Step 4: Simplify right side
   1,617.57x = 2,147,641.22
5. Step 5: Solve for x
   x = 2,147,641.22/1,617.57
6. Step 6: Final answer
   x = 1,327.70