Finding the Fourth Proportional to 1,253.72, 1,729.88 and 756.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,253.72 : 1,729.88 = 756.38 : x
2. Step 2: Convert to fraction form
   1,253.72/1,729.88 = 756.38/x
3. Step 3: Cross multiply
   1,253.72x = 1,729.88 × 756.38
4. Step 4: Simplify right side
   1,253.72x = 1,308,442.85
5. Step 5: Solve for x
   x = 1,308,442.85/1,253.72
6. Step 6: Final answer
   x = 1,043.65