Finding the Fourth Proportional to 3,099.83, 4,650.18 and 908.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,099.83 : 4,650.18 = 908.72 : x
2. Step 2: Convert to fraction form
   3,099.83/4,650.18 = 908.72/x
3. Step 3: Cross multiply
   3,099.83x = 4,650.18 × 908.72
4. Step 4: Simplify right side
   3,099.83x = 4,225,711.57
5. Step 5: Solve for x
   x = 4,225,711.57/3,099.83
6. Step 6: Final answer
   x = 1,363.21