Finding the Fourth Proportional to 3,824.69, 5,278.62 and 2,123.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,824.69 : 5,278.62 = 2,123.59 : x
2. Step 2: Convert to fraction form
   3,824.69/5,278.62 = 2,123.59/x
3. Step 3: Cross multiply
   3,824.69x = 5,278.62 × 2,123.59
4. Step 4: Simplify right side
   3,824.69x = 11,209,629.31
5. Step 5: Solve for x
   x = 11,209,629.31/3,824.69
6. Step 6: Final answer
   x = 2,930.86