Finding the Fourth Proportional to 2,518.48, 3,777.42 and 1,057.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,518.48 : 3,777.42 = 1,057.48 : x
2. Step 2: Convert to fraction form
   2,518.48/3,777.42 = 1,057.48/x
3. Step 3: Cross multiply
   2,518.48x = 3,777.42 × 1,057.48
4. Step 4: Simplify right side
   2,518.48x = 3,994,546.10
5. Step 5: Solve for x
   x = 3,994,546.10/2,518.48
6. Step 6: Final answer
   x = 1,586.09