Finding the Fourth Proportional to 1,427.07, 1,968.77 and 867.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,427.07 : 1,968.77 = 867.45 : x
2. Step 2: Convert to fraction form
   1,427.07/1,968.77 = 867.45/x
3. Step 3: Cross multiply
   1,427.07x = 1,968.77 × 867.45
4. Step 4: Simplify right side
   1,427.07x = 1,707,799.69
5. Step 5: Solve for x
   x = 1,707,799.69/1,427.07
6. Step 6: Final answer
   x = 1,196.72