Finding the Fourth Proportional to 2,011.98, 2,776.59 and 1,127.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,011.98 : 2,776.59 = 1,127.78 : x
2. Step 2: Convert to fraction form
   2,011.98/2,776.59 = 1,127.78/x
3. Step 3: Cross multiply
   2,011.98x = 2,776.59 × 1,127.78
4. Step 4: Simplify right side
   2,011.98x = 3,131,368.79
5. Step 5: Solve for x
   x = 3,131,368.79/2,011.98
6. Step 6: Final answer
   x = 1,556.36