Finding the Fourth Proportional to 2,162.71, 2,984.46 and 1,218.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,162.71 : 2,984.46 = 1,218.52 : x
2. Step 2: Convert to fraction form
   2,162.71/2,984.46 = 1,218.52/x
3. Step 3: Cross multiply
   2,162.71x = 2,984.46 × 1,218.52
4. Step 4: Simplify right side
   2,162.71x = 3,636,624.20
5. Step 5: Solve for x
   x = 3,636,624.20/2,162.71
6. Step 6: Final answer
   x = 1,681.51