Finding the Fourth Proportional to 3,723.72, 5,138.79 and 2,045.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,723.72 : 5,138.79 = 2,045.10 : x
2. Step 2: Convert to fraction form
   3,723.72/5,138.79 = 2,045.10/x
3. Step 3: Cross multiply
   3,723.72x = 5,138.79 × 2,045.10
4. Step 4: Simplify right side
   3,723.72x = 10,509,339.43
5. Step 5: Solve for x
   x = 10,509,339.43/3,723.72
6. Step 6: Final answer
   x = 2,822.27