Finding the Fourth Proportional to 3,789.16, 5,229.78 and 2,111.08

Step by Step Solution

1. Step 1: Write the proportion equation
   3,789.16 : 5,229.78 = 2,111.08 : x
2. Step 2: Convert to fraction form
   3,789.16/5,229.78 = 2,111.08/x
3. Step 3: Cross multiply
   3,789.16x = 5,229.78 × 2,111.08
4. Step 4: Simplify right side
   3,789.16x = 11,040,483.96
5. Step 5: Solve for x
   x = 11,040,483.96/3,789.16
6. Step 6: Final answer
   x = 2,913.70