Finding the Fourth Proportional to 1,227.61, 1,693.81 and 749.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,227.61 : 1,693.81 = 749.30 : x
2. Step 2: Convert to fraction form
   1,227.61/1,693.81 = 749.30/x
3. Step 3: Cross multiply
   1,227.61x = 1,693.81 × 749.30
4. Step 4: Simplify right side
   1,227.61x = 1,269,173.83
5. Step 5: Solve for x
   x = 1,269,173.83/1,227.61
6. Step 6: Final answer
   x = 1,033.86