Finding the Fourth Proportional to 3,100.83, 4,651.68 and 909.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,100.83 : 4,651.68 = 909.72 : x
2. Step 2: Convert to fraction form
   3,100.83/4,651.68 = 909.72/x
3. Step 3: Cross multiply
   3,100.83x = 4,651.68 × 909.72
4. Step 4: Simplify right side
   3,100.83x = 4,231,726.33
5. Step 5: Solve for x
   x = 4,231,726.33/3,100.83
6. Step 6: Final answer
   x = 1,364.71