Finding the Fourth Proportional to 2,488.86, 3,434.63 and 1,369.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,488.86 : 3,434.63 = 1,369.78 : x
2. Step 2: Convert to fraction form
   2,488.86/3,434.63 = 1,369.78/x
3. Step 3: Cross multiply
   2,488.86x = 3,434.63 × 1,369.78
4. Step 4: Simplify right side
   2,488.86x = 4,704,672.05
5. Step 5: Solve for x
   x = 4,704,672.05/2,488.86
6. Step 6: Final answer
   x = 1,890.29