Finding the Fourth Proportional to 3,905.83, 5,390.52 and 2,227.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,905.83 : 5,390.52 = 2,227.60 : x
2. Step 2: Convert to fraction form
   3,905.83/5,390.52 = 2,227.60/x
3. Step 3: Cross multiply
   3,905.83x = 5,390.52 × 2,227.60
4. Step 4: Simplify right side
   3,905.83x = 12,007,895.40
5. Step 5: Solve for x
   x = 12,007,895.40/3,905.83
6. Step 6: Final answer
   x = 3,074.36