Finding the Fourth Proportional to 3,499.65, 5,249.72 and 1,419.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,499.65 : 5,249.72 = 1,419.61 : x
2. Step 2: Convert to fraction form
   3,499.65/5,249.72 = 1,419.61/x
3. Step 3: Cross multiply
   3,499.65x = 5,249.72 × 1,419.61
4. Step 4: Simplify right side
   3,499.65x = 7,452,555.28
5. Step 5: Solve for x
   x = 7,452,555.28/3,499.65
6. Step 6: Final answer
   x = 2,129.51