Finding the Fourth Proportional to 2,385.72, 3,291.50 and 1,441.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,385.72 : 3,291.50 = 1,441.80 : x
2. Step 2: Convert to fraction form
   2,385.72/3,291.50 = 1,441.80/x
3. Step 3: Cross multiply
   2,385.72x = 3,291.50 × 1,441.80
4. Step 4: Simplify right side
   2,385.72x = 4,745,688.30
5. Step 5: Solve for x
   x = 4,745,688.30/2,385.72
6. Step 6: Final answer
   x = 1,989.21