Finding the Fourth Proportional to 2,488.68, 3,434.30 and 1,354.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,488.68 : 3,434.30 = 1,354.31 : x
2. Step 2: Convert to fraction form
   2,488.68/3,434.30 = 1,354.31/x
3. Step 3: Cross multiply
   2,488.68x = 3,434.30 × 1,354.31
4. Step 4: Simplify right side
   2,488.68x = 4,651,101.63
5. Step 5: Solve for x
   x = 4,651,101.63/2,488.68
6. Step 6: Final answer
   x = 1,868.91