Finding the Fourth Proportional to 3,713.14, 5,123.46 and 2,119.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,713.14 : 5,123.46 = 2,119.78 : x
2. Step 2: Convert to fraction form
   3,713.14/5,123.46 = 2,119.78/x
3. Step 3: Cross multiply
   3,713.14x = 5,123.46 × 2,119.78
4. Step 4: Simplify right side
   3,713.14x = 10,860,608.04
5. Step 5: Solve for x
   x = 10,860,608.04/3,713.14
6. Step 6: Final answer
   x = 2,924.91