Finding the Fourth Proportional to 3,768.69, 5,658.30 and 1,921.29

Step by Step Solution

1. Step 1: Write the proportion equation
   3,768.69 : 5,658.30 = 1,921.29 : x
2. Step 2: Convert to fraction form
   3,768.69/5,658.30 = 1,921.29/x
3. Step 3: Cross multiply
   3,768.69x = 5,658.30 × 1,921.29
4. Step 4: Simplify right side
   3,768.69x = 10,871,235.21
5. Step 5: Solve for x
   x = 10,871,235.21/3,768.69
6. Step 6: Final answer
   x = 2,884.62