Finding the Fourth Proportional to 2,380.56, 3,285.50 and 1,436.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,380.56 : 3,285.50 = 1,436.40 : x
2. Step 2: Convert to fraction form
   2,380.56/3,285.50 = 1,436.40/x
3. Step 3: Cross multiply
   2,380.56x = 3,285.50 × 1,436.40
4. Step 4: Simplify right side
   2,380.56x = 4,719,292.20
5. Step 5: Solve for x
   x = 4,719,292.20/2,380.56
6. Step 6: Final answer
   x = 1,982.43