Finding the Fourth Proportional to 2,488.57, 3,434.01 and 1,369.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,488.57 : 3,434.01 = 1,369.56 : x
2. Step 2: Convert to fraction form
   2,488.57/3,434.01 = 1,369.56/x
3. Step 3: Cross multiply
   2,488.57x = 3,434.01 × 1,369.56
4. Step 4: Simplify right side
   2,488.57x = 4,703,073.09
5. Step 5: Solve for x
   x = 4,703,073.09/2,488.57
6. Step 6: Final answer
   x = 1,889.87