Finding the Fourth Proportional to 2,579.57, 3,559.51 and 1,445.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,579.57 : 3,559.51 = 1,445.31 : x
2. Step 2: Convert to fraction form
   2,579.57/3,559.51 = 1,445.31/x
3. Step 3: Cross multiply
   2,579.57x = 3,559.51 × 1,445.31
4. Step 4: Simplify right side
   2,579.57x = 5,144,595.40
5. Step 5: Solve for x
   x = 5,144,595.40/2,579.57
6. Step 6: Final answer
   x = 1,994.36