Finding the Fourth Proportional to 5,081.61, 7,622.82 and 1,618.86

Step by Step Solution

1. Step 1: Write the proportion equation
   5,081.61 : 7,622.82 = 1,618.86 : x
2. Step 2: Convert to fraction form
   5,081.61/7,622.82 = 1,618.86/x
3. Step 3: Cross multiply
   5,081.61x = 7,622.82 × 1,618.86
4. Step 4: Simplify right side
   5,081.61x = 12,340,278.39
5. Step 5: Solve for x
   x = 12,340,278.39/5,081.61
6. Step 6: Final answer
   x = 2,428.42