Finding the Fourth Proportional to 2,188.48, 3,019.24 and 1,442.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188.48 : 3,019.24 = 1,442.82 : x
2. Step 2: Convert to fraction form
   2,188.48/3,019.24 = 1,442.82/x
3. Step 3: Cross multiply
   2,188.48x = 3,019.24 × 1,442.82
4. Step 4: Simplify right side
   2,188.48x = 4,356,219.86
5. Step 5: Solve for x
   x = 4,356,219.86/2,188.48
6. Step 6: Final answer
   x = 1,990.52