Finding the Fourth Proportional to 2,162.18, 2,984.91 and 1,689.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,162.18 : 2,984.91 = 1,689.23 : x
2. Step 2: Convert to fraction form
   2,162.18/2,984.91 = 1,689.23/x
3. Step 3: Cross multiply
   2,162.18x = 2,984.91 × 1,689.23
4. Step 4: Simplify right side
   2,162.18x = 5,042,199.52
5. Step 5: Solve for x
   x = 5,042,199.52/2,162.18
6. Step 6: Final answer
   x = 2,332.00