Finding the Fourth Proportional to 1,996.80, 2,755.50 and 1,112.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,996.80 : 2,755.50 = 1,112.56 : x
2. Step 2: Convert to fraction form
   1,996.80/2,755.50 = 1,112.56/x
3. Step 3: Cross multiply
   1,996.80x = 2,755.50 × 1,112.56
4. Step 4: Simplify right side
   1,996.80x = 3,065,659.08
5. Step 5: Solve for x
   x = 3,065,659.08/1,996.80
6. Step 6: Final answer
   x = 1,535.29