Finding the Fourth Proportional to 2,577.24, 3,556.56 and 1,442.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,577.24 : 3,556.56 = 1,442.89 : x
2. Step 2: Convert to fraction form
   2,577.24/3,556.56 = 1,442.89/x
3. Step 3: Cross multiply
   2,577.24x = 3,556.56 × 1,442.89
4. Step 4: Simplify right side
   2,577.24x = 5,131,724.86
5. Step 5: Solve for x
   x = 5,131,724.86/2,577.24
6. Step 6: Final answer
   x = 1,991.17