Finding the Fourth Proportional to 1,480.67, 2,221.86 and 864.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,480.67 : 2,221.86 = 864.62 : x
2. Step 2: Convert to fraction form
   1,480.67/2,221.86 = 864.62/x
3. Step 3: Cross multiply
   1,480.67x = 2,221.86 × 864.62
4. Step 4: Simplify right side
   1,480.67x = 1,921,064.59
5. Step 5: Solve for x
   x = 1,921,064.59/1,480.67
6. Step 6: Final answer
   x = 1,297.43