Finding the Fourth Proportional to 1,991.00, 2,747.45 and 1,106.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,991.00 : 2,747.45 = 1,106.78 : x
2. Step 2: Convert to fraction form
   1,991.00/2,747.45 = 1,106.78/x
3. Step 3: Cross multiply
   1,991.00x = 2,747.45 × 1,106.78
4. Step 4: Simplify right side
   1,991.00x = 3,040,803.44
5. Step 5: Solve for x
   x = 3,040,803.44/1,991.00
6. Step 6: Final answer
   x = 1,527.28