Finding the Fourth Proportional to 3,012.72, 4,155.96 and 1,770

Step by Step Solution

1. Step 1: Write the proportion equation
   3,012.72 : 4,155.96 = 1,770 : x
2. Step 2: Convert to fraction form
   3,012.72/4,155.96 = 1,770/x
3. Step 3: Cross multiply
   3,012.72x = 4,155.96 × 1,770
4. Step 4: Simplify right side
   3,012.72x = 7,356,049.20
5. Step 5: Solve for x
   x = 7,356,049.20/3,012.72
6. Step 6: Final answer
   x = 2,441.66