Finding the Fourth Proportional to 2,189.75, 3,021.86 and 1,404.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,189.75 : 3,021.86 = 1,404.86 : x
2. Step 2: Convert to fraction form
   2,189.75/3,021.86 = 1,404.86/x
3. Step 3: Cross multiply
   2,189.75x = 3,021.86 × 1,404.86
4. Step 4: Simplify right side
   2,189.75x = 4,245,290.24
5. Step 5: Solve for x
   x = 4,245,290.24/2,189.75
6. Step 6: Final answer
   x = 1,938.71