Finding the Fourth Proportional to 2,488.96, 3,434.78 and 1,369.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,488.96 : 3,434.78 = 1,369.87 : x
2. Step 2: Convert to fraction form
   2,488.96/3,434.78 = 1,369.87/x
3. Step 3: Cross multiply
   2,488.96x = 3,434.78 × 1,369.87
4. Step 4: Simplify right side
   2,488.96x = 4,705,184.90
5. Step 5: Solve for x
   x = 4,705,184.90/2,488.96
6. Step 6: Final answer
   x = 1,890.42