Finding the Fourth Proportional to 5,081.31, 7,622.22 and 1,618.83

Step by Step Solution

1. Step 1: Write the proportion equation
   5,081.31 : 7,622.22 = 1,618.83 : x
2. Step 2: Convert to fraction form
   5,081.31/7,622.22 = 1,618.83/x
3. Step 3: Cross multiply
   5,081.31x = 7,622.22 × 1,618.83
4. Step 4: Simplify right side
   5,081.31x = 12,339,078.40
5. Step 5: Solve for x
   x = 12,339,078.40/5,081.31
6. Step 6: Final answer
   x = 2,428.33