Finding the Fourth Proportional to 2,277, 3,415.58 and 1,040.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,277 : 3,415.58 = 1,040.72 : x
2. Step 2: Convert to fraction form
   2,277/3,415.58 = 1,040.72/x
3. Step 3: Cross multiply
   2,277x = 3,415.58 × 1,040.72
4. Step 4: Simplify right side
   2,277x = 3,554,662.42
5. Step 5: Solve for x
   x = 3,554,662.42/2,277
6. Step 6: Final answer
   x = 1,561.12