Finding the Fourth Proportional to 2,478.88, 3,419.91 and 1,582.65

Step by Step Solution

1. Step 1: Write the proportion equation
   2,478.88 : 3,419.91 = 1,582.65 : x
2. Step 2: Convert to fraction form
   2,478.88/3,419.91 = 1,582.65/x
3. Step 3: Cross multiply
   2,478.88x = 3,419.91 × 1,582.65
4. Step 4: Simplify right side
   2,478.88x = 5,412,520.56
5. Step 5: Solve for x
   x = 5,412,520.56/2,478.88
6. Step 6: Final answer
   x = 2,183.46