Finding the Fourth Proportional to 2,576.86, 3,554.48 and 1,580.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,576.86 : 3,554.48 = 1,580.41 : x
2. Step 2: Convert to fraction form
   2,576.86/3,554.48 = 1,580.41/x
3. Step 3: Cross multiply
   2,576.86x = 3,554.48 × 1,580.41
4. Step 4: Simplify right side
   2,576.86x = 5,617,544.13
5. Step 5: Solve for x
   x = 5,617,544.13/2,576.86
6. Step 6: Final answer
   x = 2,179.99