Finding the Fourth Proportional to 2,012.44, 2,776.82 and 1,128.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.44 : 2,776.82 = 1,128.12 : x
2. Step 2: Convert to fraction form
   2,012.44/2,776.82 = 1,128.12/x
3. Step 3: Cross multiply
   2,012.44x = 2,776.82 × 1,128.12
4. Step 4: Simplify right side
   2,012.44x = 3,132,586.18
5. Step 5: Solve for x
   x = 3,132,586.18/2,012.44
6. Step 6: Final answer
   x = 1,556.61