Finding the Fourth Proportional to 3,658.28, 5,488.12 and 1,904.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,658.28 : 5,488.12 = 1,904.12 : x
2. Step 2: Convert to fraction form
   3,658.28/5,488.12 = 1,904.12/x
3. Step 3: Cross multiply
   3,658.28x = 5,488.12 × 1,904.12
4. Step 4: Simplify right side
   3,658.28x = 10,450,039.05
5. Step 5: Solve for x
   x = 10,450,039.05/3,658.28
6. Step 6: Final answer
   x = 2,856.54