Finding the Fourth Proportional to 2,770.56, 4,156.56 and 1,039.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,770.56 : 4,156.56 = 1,039.68 : x
2. Step 2: Convert to fraction form
   2,770.56/4,156.56 = 1,039.68/x
3. Step 3: Cross multiply
   2,770.56x = 4,156.56 × 1,039.68
4. Step 4: Simplify right side
   2,770.56x = 4,321,492.30
5. Step 5: Solve for x
   x = 4,321,492.30/2,770.56
6. Step 6: Final answer
   x = 1,559.79