Finding the Fourth Proportional to 2,380.72, 3,284.47 and 1,436.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,380.72 : 3,284.47 = 1,436.60 : x
2. Step 2: Convert to fraction form
   2,380.72/3,284.47 = 1,436.60/x
3. Step 3: Cross multiply
   2,380.72x = 3,284.47 × 1,436.60
4. Step 4: Simplify right side
   2,380.72x = 4,718,469.60
5. Step 5: Solve for x
   x = 4,718,469.60/2,380.72
6. Step 6: Final answer
   x = 1,981.95