Finding the Fourth Proportional to 1,427.24, 1,969.05 and 867.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,427.24 : 1,969.05 = 867.50 : x
2. Step 2: Convert to fraction form
   1,427.24/1,969.05 = 867.50/x
3. Step 3: Cross multiply
   1,427.24x = 1,969.05 × 867.50
4. Step 4: Simplify right side
   1,427.24x = 1,708,150.88
5. Step 5: Solve for x
   x = 1,708,150.88/1,427.24
6. Step 6: Final answer
   x = 1,196.82