Finding the Fourth Proportional to 2,515.78, 3,773.94 and 1,055.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,515.78 : 3,773.94 = 1,055.08 : x
2. Step 2: Convert to fraction form
   2,515.78/3,773.94 = 1,055.08/x
3. Step 3: Cross multiply
   2,515.78x = 3,773.94 × 1,055.08
4. Step 4: Simplify right side
   2,515.78x = 3,981,808.62
5. Step 5: Solve for x
   x = 3,981,808.62/2,515.78
6. Step 6: Final answer
   x = 1,582.73