Finding the Fourth Proportional to 2,379.45, 3,284.78 and 1,584.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,379.45 : 3,284.78 = 1,584.09 : x
2. Step 2: Convert to fraction form
   2,379.45/3,284.78 = 1,584.09/x
3. Step 3: Cross multiply
   2,379.45x = 3,284.78 × 1,584.09
4. Step 4: Simplify right side
   2,379.45x = 5,203,387.15
5. Step 5: Solve for x
   x = 5,203,387.15/2,379.45
6. Step 6: Final answer
   x = 2,186.80