Finding the Fourth Proportional to 2,131.11, 3,196.53 and 671.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.11 : 3,196.53 = 671.22 : x
2. Step 2: Convert to fraction form
   2,131.11/3,196.53 = 671.22/x
3. Step 3: Cross multiply
   2,131.11x = 3,196.53 × 671.22
4. Step 4: Simplify right side
   2,131.11x = 2,145,574.87
5. Step 5: Solve for x
   x = 2,145,574.87/2,131.11
6. Step 6: Final answer
   x = 1,006.79