Finding the Fourth Proportional to 2,128.69, 3,171.43 and 2,024.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128.69 : 3,171.43 = 2,024.13 : x
2. Step 2: Convert to fraction form
   2,128.69/3,171.43 = 2,024.13/x
3. Step 3: Cross multiply
   2,128.69x = 3,171.43 × 2,024.13
4. Step 4: Simplify right side
   2,128.69x = 6,419,386.61
5. Step 5: Solve for x
   x = 6,419,386.61/2,128.69
6. Step 6: Final answer
   x = 3,015.65