Finding the Fourth Proportional to 1,427.68, 1,969.71 and 867.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,427.68 : 1,969.71 = 867.97 : x
2. Step 2: Convert to fraction form
   1,427.68/1,969.71 = 867.97/x
3. Step 3: Cross multiply
   1,427.68x = 1,969.71 × 867.97
4. Step 4: Simplify right side
   1,427.68x = 1,709,649.19
5. Step 5: Solve for x
   x = 1,709,649.19/1,427.68
6. Step 6: Final answer
   x = 1,197.50