Finding the Fourth Proportional to 2,576.89, 3,556.06 and 1,457.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,576.89 : 3,556.06 = 1,457.80 : x
2. Step 2: Convert to fraction form
   2,576.89/3,556.06 = 1,457.80/x
3. Step 3: Cross multiply
   2,576.89x = 3,556.06 × 1,457.80
4. Step 4: Simplify right side
   2,576.89x = 5,184,024.27
5. Step 5: Solve for x
   x = 5,184,024.27/2,576.89
6. Step 6: Final answer
   x = 2,011.74