Finding the Fourth Proportional to 3,789.70, 5,229.71 and 2,111.24

Step by Step Solution

1. Step 1: Write the proportion equation
   3,789.70 : 5,229.71 = 2,111.24 : x
2. Step 2: Convert to fraction form
   3,789.70/5,229.71 = 2,111.24/x
3. Step 3: Cross multiply
   3,789.70x = 5,229.71 × 2,111.24
4. Step 4: Simplify right side
   3,789.70x = 11,041,197.83
5. Step 5: Solve for x
   x = 11,041,197.83/3,789.70
6. Step 6: Final answer
   x = 2,913.48