Finding the Fourth Proportional to 2,770.48, 4,157.52 and 1,039.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,770.48 : 4,157.52 = 1,039.12 : x
2. Step 2: Convert to fraction form
   2,770.48/4,157.52 = 1,039.12/x
3. Step 3: Cross multiply
   2,770.48x = 4,157.52 × 1,039.12
4. Step 4: Simplify right side
   2,770.48x = 4,320,162.18
5. Step 5: Solve for x
   x = 4,320,162.18/2,770.48
6. Step 6: Final answer
   x = 1,559.36