Finding the Fourth Proportional to 3,700.34, 5,105.22 and 2,128.04

Step by Step Solution

1. Step 1: Write the proportion equation
   3,700.34 : 5,105.22 = 2,128.04 : x
2. Step 2: Convert to fraction form
   3,700.34/5,105.22 = 2,128.04/x
3. Step 3: Cross multiply
   3,700.34x = 5,105.22 × 2,128.04
4. Step 4: Simplify right side
   3,700.34x = 10,864,112.37
5. Step 5: Solve for x
   x = 10,864,112.37/3,700.34
6. Step 6: Final answer
   x = 2,935.98