Finding the Fourth Proportional to 3,615.39, 4,989.27 and 2,123.32

Step by Step Solution

1. Step 1: Write the proportion equation
   3,615.39 : 4,989.27 = 2,123.32 : x
2. Step 2: Convert to fraction form
   3,615.39/4,989.27 = 2,123.32/x
3. Step 3: Cross multiply
   3,615.39x = 4,989.27 × 2,123.32
4. Step 4: Simplify right side
   3,615.39x = 10,593,816.78
5. Step 5: Solve for x
   x = 10,593,816.78/3,615.39
6. Step 6: Final answer
   x = 2,930.20