Finding the Fourth Proportional to 2,639.74, 3,642.89 and 1,444.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,639.74 : 3,642.89 = 1,444.83 : x
2. Step 2: Convert to fraction form
   2,639.74/3,642.89 = 1,444.83/x
3. Step 3: Cross multiply
   2,639.74x = 3,642.89 × 1,444.83
4. Step 4: Simplify right side
   2,639.74x = 5,263,349.53
5. Step 5: Solve for x
   x = 5,263,349.53/2,639.74
6. Step 6: Final answer
   x = 1,993.89