Finding the Fourth Proportional to 1,227.47, 1,693.27 and 760.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,227.47 : 1,693.27 = 760.91 : x
2. Step 2: Convert to fraction form
   1,227.47/1,693.27 = 760.91/x
3. Step 3: Cross multiply
   1,227.47x = 1,693.27 × 760.91
4. Step 4: Simplify right side
   1,227.47x = 1,288,426.08
5. Step 5: Solve for x
   x = 1,288,426.08/1,227.47
6. Step 6: Final answer
   x = 1,049.66