Finding the Fourth Proportional to 3,290.42, 4,935.89 and 1,099.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,290.42 : 4,935.89 = 1,099.15 : x
2. Step 2: Convert to fraction form
   3,290.42/4,935.89 = 1,099.15/x
3. Step 3: Cross multiply
   3,290.42x = 4,935.89 × 1,099.15
4. Step 4: Simplify right side
   3,290.42x = 5,425,273.90
5. Step 5: Solve for x
   x = 5,425,273.90/3,290.42
6. Step 6: Final answer
   x = 1,648.81