Finding the Fourth Proportional to 2,665.94, 3,997.66 and 910.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,665.94 : 3,997.66 = 910.47 : x
2. Step 2: Convert to fraction form
   2,665.94/3,997.66 = 910.47/x
3. Step 3: Cross multiply
   2,665.94x = 3,997.66 × 910.47
4. Step 4: Simplify right side
   2,665.94x = 3,639,749.50
5. Step 5: Solve for x
   x = 3,639,749.50/2,665.94
6. Step 6: Final answer
   x = 1,365.28