Finding the Fourth Proportional to 2,639.84, 3,642.88 and 1,461.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,639.84 : 3,642.88 = 1,461.12 : x
2. Step 2: Convert to fraction form
   2,639.84/3,642.88 = 1,461.12/x
3. Step 3: Cross multiply
   2,639.84x = 3,642.88 × 1,461.12
4. Step 4: Simplify right side
   2,639.84x = 5,322,684.83
5. Step 5: Solve for x
   x = 5,322,684.83/2,639.84
6. Step 6: Final answer
   x = 2,016.29