Finding the Fourth Proportional to 2,162.32, 2,983.59 and 1,218.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,162.32 : 2,983.59 = 1,218.16 : x
2. Step 2: Convert to fraction form
   2,162.32/2,983.59 = 1,218.16/x
3. Step 3: Cross multiply
   2,162.32x = 2,983.59 × 1,218.16
4. Step 4: Simplify right side
   2,162.32x = 3,634,489.99
5. Step 5: Solve for x
   x = 3,634,489.99/2,162.32
6. Step 6: Final answer
   x = 1,680.83