Finding the Fourth Proportional to 2,639.81, 3,642.78 and 1,460.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,639.81 : 3,642.78 = 1,460.81 : x
2. Step 2: Convert to fraction form
   2,639.81/3,642.78 = 1,460.81/x
3. Step 3: Cross multiply
   2,639.81x = 3,642.78 × 1,460.81
4. Step 4: Simplify right side
   2,639.81x = 5,321,391.24
5. Step 5: Solve for x
   x = 5,321,391.24/2,639.81
6. Step 6: Final answer
   x = 2,015.83