Finding the Fourth Proportional to 3,723.86, 5,138.72 and 2,045.48

Step by Step Solution

1. Step 1: Write the proportion equation
   3,723.86 : 5,138.72 = 2,045.48 : x
2. Step 2: Convert to fraction form
   3,723.86/5,138.72 = 2,045.48/x
3. Step 3: Cross multiply
   3,723.86x = 5,138.72 × 2,045.48
4. Step 4: Simplify right side
   3,723.86x = 10,511,138.76
5. Step 5: Solve for x
   x = 10,511,138.76/3,723.86
6. Step 6: Final answer
   x = 2,822.65