Finding the Fourth Proportional to 3,880.27, 5,354.82 and 2,111.92

Step by Step Solution

1. Step 1: Write the proportion equation
   3,880.27 : 5,354.82 = 2,111.92 : x
2. Step 2: Convert to fraction form
   3,880.27/5,354.82 = 2,111.92/x
3. Step 3: Cross multiply
   3,880.27x = 5,354.82 × 2,111.92
4. Step 4: Simplify right side
   3,880.27x = 11,308,951.45
5. Step 5: Solve for x
   x = 11,308,951.45/3,880.27
6. Step 6: Final answer
   x = 2,914.48