Finding the Fourth Proportional to 2,012.08, 2,776.52 and 1,127.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.08 : 2,776.52 = 1,127.72 : x
2. Step 2: Convert to fraction form
   2,012.08/2,776.52 = 1,127.72/x
3. Step 3: Cross multiply
   2,012.08x = 2,776.52 × 1,127.72
4. Step 4: Simplify right side
   2,012.08x = 3,131,137.13
5. Step 5: Solve for x
   x = 3,131,137.13/2,012.08
6. Step 6: Final answer
   x = 1,556.17