Finding the Fourth Proportional to 2,012.33, 2,777.10 and 1,128.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.33 : 2,777.10 = 1,128.11 : x
2. Step 2: Convert to fraction form
   2,012.33/2,777.10 = 1,128.11/x
3. Step 3: Cross multiply
   2,012.33x = 2,777.10 × 1,128.11
4. Step 4: Simplify right side
   2,012.33x = 3,132,860.40
5. Step 5: Solve for x
   x = 3,132,860.40/2,012.33
6. Step 6: Final answer
   x = 1,556.84