Finding the Fourth Proportional to 2,574.59, 3,553.57 and 1,580.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,574.59 : 3,553.57 = 1,580.11 : x
2. Step 2: Convert to fraction form
   2,574.59/3,553.57 = 1,580.11/x
3. Step 3: Cross multiply
   2,574.59x = 3,553.57 × 1,580.11
4. Step 4: Simplify right side
   2,574.59x = 5,615,024.58
5. Step 5: Solve for x
   x = 5,615,024.58/2,574.59
6. Step 6: Final answer
   x = 2,180.94