Finding the Fourth Proportional to 1,427.13, 1,969.56 and 867.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,427.13 : 1,969.56 = 867.73 : x
2. Step 2: Convert to fraction form
   1,427.13/1,969.56 = 867.73/x
3. Step 3: Cross multiply
   1,427.13x = 1,969.56 × 867.73
4. Step 4: Simplify right side
   1,427.13x = 1,709,046.30
5. Step 5: Solve for x
   x = 1,709,046.30/1,427.13
6. Step 6: Final answer
   x = 1,197.54