Finding the Fourth Proportional to 2,488.76, 3,434.73 and 1,369.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,488.76 : 3,434.73 = 1,369.91 : x
2. Step 2: Convert to fraction form
   2,488.76/3,434.73 = 1,369.91/x
3. Step 3: Cross multiply
   2,488.76x = 3,434.73 × 1,369.91
4. Step 4: Simplify right side
   2,488.76x = 4,705,270.97
5. Step 5: Solve for x
   x = 4,705,270.97/2,488.76
6. Step 6: Final answer
   x = 1,890.61