Finding the Fourth Proportional to 1,499.31, 2,249.28 and 512.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499.31 : 2,249.28 = 512.04 : x
2. Step 2: Convert to fraction form
   1,499.31/2,249.28 = 512.04/x
3. Step 3: Cross multiply
   1,499.31x = 2,249.28 × 512.04
4. Step 4: Simplify right side
   1,499.31x = 1,151,727.85
5. Step 5: Solve for x
   x = 1,151,727.85/1,499.31
6. Step 6: Final answer
   x = 768.17