Finding the Fourth Proportional to 2,518.14, 3,776.73 and 1,057.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,518.14 : 3,776.73 = 1,057.30 : x
2. Step 2: Convert to fraction form
   2,518.14/3,776.73 = 1,057.30/x
3. Step 3: Cross multiply
   2,518.14x = 3,776.73 × 1,057.30
4. Step 4: Simplify right side
   2,518.14x = 3,993,148.71
5. Step 5: Solve for x
   x = 3,993,148.71/2,518.14
6. Step 6: Final answer
   x = 1,585.75