Finding the Fourth Proportional to 1,447.99, 2,174.89 and 864.13

Step by Step Solution

1. Step 1: Write the proportion equation
   1,447.99 : 2,174.89 = 864.13 : x
2. Step 2: Convert to fraction form
   1,447.99/2,174.89 = 864.13/x
3. Step 3: Cross multiply
   1,447.99x = 2,174.89 × 864.13
4. Step 4: Simplify right side
   1,447.99x = 1,879,380.10
5. Step 5: Solve for x
   x = 1,879,380.10/1,447.99
6. Step 6: Final answer
   x = 1,297.93