Finding the Fourth Proportional to 1,469.91, 2,028.38 and 864.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,469.91 : 2,028.38 = 864.45 : x
2. Step 2: Convert to fraction form
   1,469.91/2,028.38 = 864.45/x
3. Step 3: Cross multiply
   1,469.91x = 2,028.38 × 864.45
4. Step 4: Simplify right side
   1,469.91x = 1,753,428.77
5. Step 5: Solve for x
   x = 1,753,428.77/1,469.91
6. Step 6: Final answer
   x = 1,192.88