Finding the Fourth Proportional to 3,785.37, 5,223.72 and 2,106.71

Step by Step Solution

1. Step 1: Write the proportion equation
   3,785.37 : 5,223.72 = 2,106.71 : x
2. Step 2: Convert to fraction form
   3,785.37/5,223.72 = 2,106.71/x
3. Step 3: Cross multiply
   3,785.37x = 5,223.72 × 2,106.71
4. Step 4: Simplify right side
   3,785.37x = 11,004,863.16
5. Step 5: Solve for x
   x = 11,004,863.16/3,785.37
6. Step 6: Final answer
   x = 2,907.21