Finding the Fourth Proportional to 2,162.92, 2,984.65 and 1,218.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,162.92 : 2,984.65 = 1,218.42 : x
2. Step 2: Convert to fraction form
   2,162.92/2,984.65 = 1,218.42/x
3. Step 3: Cross multiply
   2,162.92x = 2,984.65 × 1,218.42
4. Step 4: Simplify right side
   2,162.92x = 3,636,557.25
5. Step 5: Solve for x
   x = 3,636,557.25/2,162.92
6. Step 6: Final answer
   x = 1,681.32