Finding the Fourth Proportional to 3,100.94, 4,650.49 and 909.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,100.94 : 4,650.49 = 909.15 : x
2. Step 2: Convert to fraction form
   3,100.94/4,650.49 = 909.15/x
3. Step 3: Cross multiply
   3,100.94x = 4,650.49 × 909.15
4. Step 4: Simplify right side
   3,100.94x = 4,227,992.98
5. Step 5: Solve for x
   x = 4,227,992.98/3,100.94
6. Step 6: Final answer
   x = 1,363.46