Finding the Fourth Proportional to 2,011.95, 2,776.61 and 1,128.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,011.95 : 2,776.61 = 1,128.03 : x
2. Step 2: Convert to fraction form
   2,011.95/2,776.61 = 1,128.03/x
3. Step 3: Cross multiply
   2,011.95x = 2,776.61 × 1,128.03
4. Step 4: Simplify right side
   2,011.95x = 3,132,093.74
5. Step 5: Solve for x
   x = 3,132,093.74/2,011.95
6. Step 6: Final answer
   x = 1,556.75