Finding the Fourth Proportional to 2,162.75, 2,984.46 and 1,218.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,162.75 : 2,984.46 = 1,218.69 : x
2. Step 2: Convert to fraction form
   2,162.75/2,984.46 = 1,218.69/x
3. Step 3: Cross multiply
   2,162.75x = 2,984.46 × 1,218.69
4. Step 4: Simplify right side
   2,162.75x = 3,637,131.56
5. Step 5: Solve for x
   x = 3,637,131.56/2,162.75
6. Step 6: Final answer
   x = 1,681.72