Finding the Fourth Proportional to 2,270.87, 3,401.51 and 1,039.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,270.87 : 3,401.51 = 1,039.31 : x
2. Step 2: Convert to fraction form
   2,270.87/3,401.51 = 1,039.31/x
3. Step 3: Cross multiply
   2,270.87x = 3,401.51 × 1,039.31
4. Step 4: Simplify right side
   2,270.87x = 3,535,201.15
5. Step 5: Solve for x
   x = 3,535,201.15/2,270.87
6. Step 6: Final answer
   x = 1,556.76