Finding the Fourth Proportional to 2,577.20, 3,556.54 and 1,458.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,577.20 : 3,556.54 = 1,458.12 : x
2. Step 2: Convert to fraction form
   2,577.20/3,556.54 = 1,458.12/x
3. Step 3: Cross multiply
   2,577.20x = 3,556.54 × 1,458.12
4. Step 4: Simplify right side
   2,577.20x = 5,185,862.10
5. Step 5: Solve for x
   x = 5,185,862.10/2,577.20
6. Step 6: Final answer
   x = 2,012.21