Finding the Fourth Proportional to 1,991.37, 2,986.04 and 674.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,991.37 : 2,986.04 = 674.72 : x
2. Step 2: Convert to fraction form
   1,991.37/2,986.04 = 674.72/x
3. Step 3: Cross multiply
   1,991.37x = 2,986.04 × 674.72
4. Step 4: Simplify right side
   1,991.37x = 2,014,727.67
5. Step 5: Solve for x
   x = 2,014,727.67/1,991.37
6. Step 6: Final answer
   x = 1,011.73