Finding the Fourth Proportional to 2,771.34, 4,156.20 and 1,039.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,771.34 : 4,156.20 = 1,039.56 : x
2. Step 2: Convert to fraction form
   2,771.34/4,156.20 = 1,039.56/x
3. Step 3: Cross multiply
   2,771.34x = 4,156.20 × 1,039.56
4. Step 4: Simplify right side
   2,771.34x = 4,320,619.27
5. Step 5: Solve for x
   x = 4,320,619.27/2,771.34
6. Step 6: Final answer
   x = 1,559.04