Finding the Fourth Proportional to 2,635.83, 3,637.42 and 1,440.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,635.83 : 3,637.42 = 1,440.79 : x
2. Step 2: Convert to fraction form
   2,635.83/3,637.42 = 1,440.79/x
3. Step 3: Cross multiply
   2,635.83x = 3,637.42 × 1,440.79
4. Step 4: Simplify right side
   2,635.83x = 5,240,745.67
5. Step 5: Solve for x
   x = 5,240,745.67/2,635.83
6. Step 6: Final answer
   x = 1,988.27