Finding the Fourth Proportional to 2,189.92, 3,024.14 and 1,405.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,189.92 : 3,024.14 = 1,405.34 : x
2. Step 2: Convert to fraction form
   2,189.92/3,024.14 = 1,405.34/x
3. Step 3: Cross multiply
   2,189.92x = 3,024.14 × 1,405.34
4. Step 4: Simplify right side
   2,189.92x = 4,249,944.91
5. Step 5: Solve for x
   x = 4,249,944.91/2,189.92
6. Step 6: Final answer
   x = 1,940.69