Finding the Fourth Proportional to 2,109, 3,162.57 and 1,622.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109 : 3,162.57 = 1,622.38 : x
2. Step 2: Convert to fraction form
   2,109/3,162.57 = 1,622.38/x
3. Step 3: Cross multiply
   2,109x = 3,162.57 × 1,622.38
4. Step 4: Simplify right side
   2,109x = 5,130,890.32
5. Step 5: Solve for x
   x = 5,130,890.32/2,109
6. Step 6: Final answer
   x = 2,432.85