Finding the Fourth Proportional to 2,012.16, 2,776.78 and 1,127.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.16 : 2,776.78 = 1,127.96 : x
2. Step 2: Convert to fraction form
   2,012.16/2,776.78 = 1,127.96/x
3. Step 3: Cross multiply
   2,012.16x = 2,776.78 × 1,127.96
4. Step 4: Simplify right side
   2,012.16x = 3,132,096.77
5. Step 5: Solve for x
   x = 3,132,096.77/2,012.16
6. Step 6: Final answer
   x = 1,556.58