Finding the Fourth Proportional to 3,653.50, 5,480.27 and 917.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,653.50 : 5,480.27 = 917.50 : x
2. Step 2: Convert to fraction form
   3,653.50/5,480.27 = 917.50/x
3. Step 3: Cross multiply
   3,653.50x = 5,480.27 × 917.50
4. Step 4: Simplify right side
   3,653.50x = 5,028,147.73
5. Step 5: Solve for x
   x = 5,028,147.73/3,653.50
6. Step 6: Final answer
   x = 1,376.26