Finding the Fourth Proportional to 3,928.83, 5,422.94 and 2,336.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,928.83 : 5,422.94 = 2,336.61 : x
2. Step 2: Convert to fraction form
   3,928.83/5,422.94 = 2,336.61/x
3. Step 3: Cross multiply
   3,928.83x = 5,422.94 × 2,336.61
4. Step 4: Simplify right side
   3,928.83x = 12,671,274.06
5. Step 5: Solve for x
   x = 12,671,274.06/3,928.83
6. Step 6: Final answer
   x = 3,225.20