Finding the Fourth Proportional to 2,577.48, 3,862.38 and 2,118.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,577.48 : 3,862.38 = 2,118.48 : x
2. Step 2: Convert to fraction form
   2,577.48/3,862.38 = 2,118.48/x
3. Step 3: Cross multiply
   2,577.48x = 3,862.38 × 2,118.48
4. Step 4: Simplify right side
   2,577.48x = 8,182,374.78
5. Step 5: Solve for x
   x = 8,182,374.78/2,577.48
6. Step 6: Final answer
   x = 3,174.56