Finding the Fourth Proportional to 3,591.12, 4,955.72 and 2,019.20

Step by Step Solution

1. Step 1: Write the proportion equation
   3,591.12 : 4,955.72 = 2,019.20 : x
2. Step 2: Convert to fraction form
   3,591.12/4,955.72 = 2,019.20/x
3. Step 3: Cross multiply
   3,591.12x = 4,955.72 × 2,019.20
4. Step 4: Simplify right side
   3,591.12x = 10,006,589.82
5. Step 5: Solve for x
   x = 10,006,589.82/3,591.12
6. Step 6: Final answer
   x = 2,786.48