Finding the Fourth Proportional to 3,693.48, 5,540.17 and 920.17

Step by Step Solution

1. Step 1: Write the proportion equation
   3,693.48 : 5,540.17 = 920.17 : x
2. Step 2: Convert to fraction form
   3,693.48/5,540.17 = 920.17/x
3. Step 3: Cross multiply
   3,693.48x = 5,540.17 × 920.17
4. Step 4: Simplify right side
   3,693.48x = 5,097,893.63
5. Step 5: Solve for x
   x = 5,097,893.63/3,693.48
6. Step 6: Final answer
   x = 1,380.24