Finding the Fourth Proportional to 2,635.17, 3,636.42 and 1,440.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,635.17 : 3,636.42 = 1,440.18 : x
2. Step 2: Convert to fraction form
   2,635.17/3,636.42 = 1,440.18/x
3. Step 3: Cross multiply
   2,635.17x = 3,636.42 × 1,440.18
4. Step 4: Simplify right side
   2,635.17x = 5,237,098.01
5. Step 5: Solve for x
   x = 5,237,098.01/2,635.17
6. Step 6: Final answer
   x = 1,987.38