Finding the Fourth Proportional to 2,488.09, 3,433.35 and 1,440.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,488.09 : 3,433.35 = 1,440.22 : x
2. Step 2: Convert to fraction form
   2,488.09/3,433.35 = 1,440.22/x
3. Step 3: Cross multiply
   2,488.09x = 3,433.35 × 1,440.22
4. Step 4: Simplify right side
   2,488.09x = 4,944,779.34
5. Step 5: Solve for x
   x = 4,944,779.34/2,488.09
6. Step 6: Final answer
   x = 1,987.38