Finding the Fourth Proportional to 2,406.47, 3,315.77 and 1,619.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,406.47 : 3,315.77 = 1,619.15 : x
2. Step 2: Convert to fraction form
   2,406.47/3,315.77 = 1,619.15/x
3. Step 3: Cross multiply
   2,406.47x = 3,315.77 × 1,619.15
4. Step 4: Simplify right side
   2,406.47x = 5,368,704.32
5. Step 5: Solve for x
   x = 5,368,704.32/2,406.47
6. Step 6: Final answer
   x = 2,230.95