Finding the Fourth Proportional to 3,728.72, 5,145.63 and 2,050.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,728.72 : 5,145.63 = 2,050.15 : x
2. Step 2: Convert to fraction form
   3,728.72/5,145.63 = 2,050.15/x
3. Step 3: Cross multiply
   3,728.72x = 5,145.63 × 2,050.15
4. Step 4: Simplify right side
   3,728.72x = 10,549,334.21
5. Step 5: Solve for x
   x = 10,549,334.21/3,728.72
6. Step 6: Final answer
   x = 2,829.21