Finding the Fourth Proportional to 2,188.09, 3,020.82 and 1,441.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188.09 : 3,020.82 = 1,441.78 : x
2. Step 2: Convert to fraction form
   2,188.09/3,020.82 = 1,441.78/x
3. Step 3: Cross multiply
   2,188.09x = 3,020.82 × 1,441.78
4. Step 4: Simplify right side
   2,188.09x = 4,355,357.86
5. Step 5: Solve for x
   x = 4,355,357.86/2,188.09
6. Step 6: Final answer
   x = 1,990.48