Finding the Fourth Proportional to 3,728.16, 5,591.52 and 1,419.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,728.16 : 5,591.52 = 1,419.12 : x
2. Step 2: Convert to fraction form
   3,728.16/5,591.52 = 1,419.12/x
3. Step 3: Cross multiply
   3,728.16x = 5,591.52 × 1,419.12
4. Step 4: Simplify right side
   3,728.16x = 7,935,037.86
5. Step 5: Solve for x
   x = 7,935,037.86/3,728.16
6. Step 6: Final answer
   x = 2,128.41