Finding the Fourth Proportional to 2,488.64, 3,434.34 and 1,369.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,488.64 : 3,434.34 = 1,369.55 : x
2. Step 2: Convert to fraction form
   2,488.64/3,434.34 = 1,369.55/x
3. Step 3: Cross multiply
   2,488.64x = 3,434.34 × 1,369.55
4. Step 4: Simplify right side
   2,488.64x = 4,703,500.35
5. Step 5: Solve for x
   x = 4,703,500.35/2,488.64
6. Step 6: Final answer
   x = 1,889.99