Finding the Fourth Proportional to 2,641.58, 3,644.76 and 1,579.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,641.58 : 3,644.76 = 1,579.70 : x
2. Step 2: Convert to fraction form
   2,641.58/3,644.76 = 1,579.70/x
3. Step 3: Cross multiply
   2,641.58x = 3,644.76 × 1,579.70
4. Step 4: Simplify right side
   2,641.58x = 5,757,609.15
5. Step 5: Solve for x
   x = 5,757,609.15/2,641.58
6. Step 6: Final answer
   x = 2,179.61