Finding the Fourth Proportional to 2,162.00, 2,983.57 and 1,217.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,162.00 : 2,983.57 = 1,217.80 : x
2. Step 2: Convert to fraction form
   2,162.00/2,983.57 = 1,217.80/x
3. Step 3: Cross multiply
   2,162.00x = 2,983.57 × 1,217.80
4. Step 4: Simplify right side
   2,162.00x = 3,633,383.37
5. Step 5: Solve for x
   x = 3,633,383.37/2,162.00
6. Step 6: Final answer
   x = 1,680.57