Finding the Fourth Proportional to 2,128.56, 3,192.83 and 667.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128.56 : 3,192.83 = 667.82 : x
2. Step 2: Convert to fraction form
   2,128.56/3,192.83 = 667.82/x
3. Step 3: Cross multiply
   2,128.56x = 3,192.83 × 667.82
4. Step 4: Simplify right side
   2,128.56x = 2,132,235.73
5. Step 5: Solve for x
   x = 2,132,235.73/2,128.56
6. Step 6: Final answer
   x = 1,001.73