Finding the Fourth Proportional to 2,099.12, 3,160.88 and 1,518.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,099.12 : 3,160.88 = 1,518.09 : x
2. Step 2: Convert to fraction form
   2,099.12/3,160.88 = 1,518.09/x
3. Step 3: Cross multiply
   2,099.12x = 3,160.88 × 1,518.09
4. Step 4: Simplify right side
   2,099.12x = 4,798,500.32
5. Step 5: Solve for x
   x = 4,798,500.32/2,099.12
6. Step 6: Final answer
   x = 2,285.96