Finding the Fourth Proportional to 1,250.78, 1,726.28 and 753.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,250.78 : 1,726.28 = 753.49 : x
2. Step 2: Convert to fraction form
   1,250.78/1,726.28 = 753.49/x
3. Step 3: Cross multiply
   1,250.78x = 1,726.28 × 753.49
4. Step 4: Simplify right side
   1,250.78x = 1,300,732.71
5. Step 5: Solve for x
   x = 1,300,732.71/1,250.78
6. Step 6: Final answer
   x = 1,039.94