Finding the Fourth Proportional to 2,517.18, 3,776.31 and 1,055.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,517.18 : 3,776.31 = 1,055.49 : x
2. Step 2: Convert to fraction form
   2,517.18/3,776.31 = 1,055.49/x
3. Step 3: Cross multiply
   2,517.18x = 3,776.31 × 1,055.49
4. Step 4: Simplify right side
   2,517.18x = 3,985,857.44
5. Step 5: Solve for x
   x = 3,985,857.44/2,517.18
6. Step 6: Final answer
   x = 1,583.46