Finding the Fourth Proportional to 1,456.78, 2,010.31 and 867.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,456.78 : 2,010.31 = 867.18 : x
2. Step 2: Convert to fraction form
   1,456.78/2,010.31 = 867.18/x
3. Step 3: Cross multiply
   1,456.78x = 2,010.31 × 867.18
4. Step 4: Simplify right side
   1,456.78x = 1,743,300.63
5. Step 5: Solve for x
   x = 1,743,300.63/1,456.78
6. Step 6: Final answer
   x = 1,196.68