Finding the Fourth Proportional to 1,427.34, 1,969.16 and 867.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,427.34 : 1,969.16 = 867.62 : x
2. Step 2: Convert to fraction form
   1,427.34/1,969.16 = 867.62/x
3. Step 3: Cross multiply
   1,427.34x = 1,969.16 × 867.62
4. Step 4: Simplify right side
   1,427.34x = 1,708,482.60
5. Step 5: Solve for x
   x = 1,708,482.60/1,427.34
6. Step 6: Final answer
   x = 1,196.97