Finding the Fourth Proportional to 2,561.07, 3,841.49 and 712.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,561.07 : 3,841.49 = 712.28 : x
2. Step 2: Convert to fraction form
   2,561.07/3,841.49 = 712.28/x
3. Step 3: Cross multiply
   2,561.07x = 3,841.49 × 712.28
4. Step 4: Simplify right side
   2,561.07x = 2,736,227.88
5. Step 5: Solve for x
   x = 2,736,227.88/2,561.07
6. Step 6: Final answer
   x = 1,068.39