Finding the Fourth Proportional to 2,128.86, 2,936.58 and 1,465.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128.86 : 2,936.58 = 1,465.68 : x
2. Step 2: Convert to fraction form
   2,128.86/2,936.58 = 1,465.68/x
3. Step 3: Cross multiply
   2,128.86x = 2,936.58 × 1,465.68
4. Step 4: Simplify right side
   2,128.86x = 4,304,086.57
5. Step 5: Solve for x
   x = 4,304,086.57/2,128.86
6. Step 6: Final answer
   x = 2,021.78