Finding the Fourth Proportional to 2,162.24, 2,984.18 and 1,218.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,162.24 : 2,984.18 = 1,218.22 : x
2. Step 2: Convert to fraction form
   2,162.24/2,984.18 = 1,218.22/x
3. Step 3: Cross multiply
   2,162.24x = 2,984.18 × 1,218.22
4. Step 4: Simplify right side
   2,162.24x = 3,635,387.76
5. Step 5: Solve for x
   x = 3,635,387.76/2,162.24
6. Step 6: Final answer
   x = 1,681.31