Finding the Fourth Proportional to 2,488.17, 3,431.28 and 1,604.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,488.17 : 3,431.28 = 1,604.25 : x
2. Step 2: Convert to fraction form
   2,488.17/3,431.28 = 1,604.25/x
3. Step 3: Cross multiply
   2,488.17x = 3,431.28 × 1,604.25
4. Step 4: Simplify right side
   2,488.17x = 5,504,630.94
5. Step 5: Solve for x
   x = 5,504,630.94/2,488.17
6. Step 6: Final answer
   x = 2,212.32