Finding the Fourth Proportional to 2,113.16, 3,167.67 and 881.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,113.16 : 3,167.67 = 881.42 : x
2. Step 2: Convert to fraction form
   2,113.16/3,167.67 = 881.42/x
3. Step 3: Cross multiply
   2,113.16x = 3,167.67 × 881.42
4. Step 4: Simplify right side
   2,113.16x = 2,792,047.69
5. Step 5: Solve for x
   x = 2,792,047.69/2,113.16
6. Step 6: Final answer
   x = 1,321.27