Finding the Fourth Proportional to 1,456.69, 2,010.42 and 867.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,456.69 : 2,010.42 = 867.55 : x
2. Step 2: Convert to fraction form
   1,456.69/2,010.42 = 867.55/x
3. Step 3: Cross multiply
   1,456.69x = 2,010.42 × 867.55
4. Step 4: Simplify right side
   1,456.69x = 1,744,139.87
5. Step 5: Solve for x
   x = 1,744,139.87/1,456.69
6. Step 6: Final answer
   x = 1,197.33