Finding the Fourth Proportional to 2,986.67, 4,480.89 and 1,206.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,986.67 : 4,480.89 = 1,206.81 : x
2. Step 2: Convert to fraction form
   2,986.67/4,480.89 = 1,206.81/x
3. Step 3: Cross multiply
   2,986.67x = 4,480.89 × 1,206.81
4. Step 4: Simplify right side
   2,986.67x = 5,407,582.86
5. Step 5: Solve for x
   x = 5,407,582.86/2,986.67
6. Step 6: Final answer
   x = 1,810.58