Finding the Fourth Proportional to 3,100.89, 4,650.42 and 909.33

Step by Step Solution

1. Step 1: Write the proportion equation
   3,100.89 : 4,650.42 = 909.33 : x
2. Step 2: Convert to fraction form
   3,100.89/4,650.42 = 909.33/x
3. Step 3: Cross multiply
   3,100.89x = 4,650.42 × 909.33
4. Step 4: Simplify right side
   3,100.89x = 4,228,761.87
5. Step 5: Solve for x
   x = 4,228,761.87/3,100.89
6. Step 6: Final answer
   x = 1,363.73