Finding the Fourth Proportional to 2,189.12, 3,020.43 and 1,404.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,189.12 : 3,020.43 = 1,404.23 : x
2. Step 2: Convert to fraction form
   2,189.12/3,020.43 = 1,404.23/x
3. Step 3: Cross multiply
   2,189.12x = 3,020.43 × 1,404.23
4. Step 4: Simplify right side
   2,189.12x = 4,241,363.32
5. Step 5: Solve for x
   x = 4,241,363.32/2,189.12
6. Step 6: Final answer
   x = 1,937.48