Finding the Fourth Proportional to 1,499.31, 2,249.01 and 768.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499.31 : 2,249.01 = 768.32 : x
2. Step 2: Convert to fraction form
   1,499.31/2,249.01 = 768.32/x
3. Step 3: Cross multiply
   1,499.31x = 2,249.01 × 768.32
4. Step 4: Simplify right side
   1,499.31x = 1,727,959.36
5. Step 5: Solve for x
   x = 1,727,959.36/1,499.31
6. Step 6: Final answer
   x = 1,152.50