Finding the Fourth Proportional to 2,561.81, 3,842.33 and 712.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,561.81 : 3,842.33 = 712.73 : x
2. Step 2: Convert to fraction form
   2,561.81/3,842.33 = 712.73/x
3. Step 3: Cross multiply
   2,561.81x = 3,842.33 × 712.73
4. Step 4: Simplify right side
   2,561.81x = 2,738,549.90
5. Step 5: Solve for x
   x = 2,738,549.90/2,561.81
6. Step 6: Final answer
   x = 1,068.99