Finding the Fourth Proportional to 1,164.81, 1,607.43 and 867.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,164.81 : 1,607.43 = 867.39 : x
2. Step 2: Convert to fraction form
   1,164.81/1,607.43 = 867.39/x
3. Step 3: Cross multiply
   1,164.81x = 1,607.43 × 867.39
4. Step 4: Simplify right side
   1,164.81x = 1,394,267.83
5. Step 5: Solve for x
   x = 1,394,267.83/1,164.81
6. Step 6: Final answer
   x = 1,196.99