Finding the Fourth Proportional to 2,002.18, 2,762.55 and 1,436.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,002.18 : 2,762.55 = 1,436.80 : x
2. Step 2: Convert to fraction form
   2,002.18/2,762.55 = 1,436.80/x
3. Step 3: Cross multiply
   2,002.18x = 2,762.55 × 1,436.80
4. Step 4: Simplify right side
   2,002.18x = 3,969,218.03
5. Step 5: Solve for x
   x = 3,969,218.03/2,002.18
6. Step 6: Final answer
   x = 1,982.45