Finding the Fourth Proportional to 2,488.92, 3,434.04 and 1,604.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,488.92 : 3,434.04 = 1,604.40 : x
2. Step 2: Convert to fraction form
   2,488.92/3,434.04 = 1,604.40/x
3. Step 3: Cross multiply
   2,488.92x = 3,434.04 × 1,604.40
4. Step 4: Simplify right side
   2,488.92x = 5,509,573.78
5. Step 5: Solve for x
   x = 5,509,573.78/2,488.92
6. Step 6: Final answer
   x = 2,213.64