Finding the Fourth Proportional to 1,485.25, 2,049.83 and 864.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,485.25 : 2,049.83 = 864.25 : x
2. Step 2: Convert to fraction form
   1,485.25/2,049.83 = 864.25/x
3. Step 3: Cross multiply
   1,485.25x = 2,049.83 × 864.25
4. Step 4: Simplify right side
   1,485.25x = 1,771,561.26
5. Step 5: Solve for x
   x = 1,771,561.26/1,485.25
6. Step 6: Final answer
   x = 1,192.77