Finding the Fourth Proportional to 2,188.75, 3,019.62 and 1,443.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188.75 : 3,019.62 = 1,443.10 : x
2. Step 2: Convert to fraction form
   2,188.75/3,019.62 = 1,443.10/x
3. Step 3: Cross multiply
   2,188.75x = 3,019.62 × 1,443.10
4. Step 4: Simplify right side
   2,188.75x = 4,357,613.62
5. Step 5: Solve for x
   x = 4,357,613.62/2,188.75
6. Step 6: Final answer
   x = 1,990.91