Finding the Fourth Proportional to 2,187.86, 3,019.56 and 1,442.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,187.86 : 3,019.56 = 1,442.96 : x
2. Step 2: Convert to fraction form
   2,187.86/3,019.56 = 1,442.96/x
3. Step 3: Cross multiply
   2,187.86x = 3,019.56 × 1,442.96
4. Step 4: Simplify right side
   2,187.86x = 4,357,104.30
5. Step 5: Solve for x
   x = 4,357,104.30/2,187.86
6. Step 6: Final answer
   x = 1,991.49