Finding the Fourth Proportional to 2,124.80, 2,934.60 and 2,021.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,124.80 : 2,934.60 = 2,021.12 : x
2. Step 2: Convert to fraction form
   2,124.80/2,934.60 = 2,021.12/x
3. Step 3: Cross multiply
   2,124.80x = 2,934.60 × 2,021.12
4. Step 4: Simplify right side
   2,124.80x = 5,931,178.75
5. Step 5: Solve for x
   x = 5,931,178.75/2,124.80
6. Step 6: Final answer
   x = 2,791.41