Finding the Fourth Proportional to 3,883.96, 5,359.98 and 2,205.40

Step by Step Solution

1. Step 1: Write the proportion equation
   3,883.96 : 5,359.98 = 2,205.40 : x
2. Step 2: Convert to fraction form
   3,883.96/5,359.98 = 2,205.40/x
3. Step 3: Cross multiply
   3,883.96x = 5,359.98 × 2,205.40
4. Step 4: Simplify right side
   3,883.96x = 11,820,899.89
5. Step 5: Solve for x
   x = 11,820,899.89/3,883.96
6. Step 6: Final answer
   x = 3,043.52