Finding the Fourth Proportional to 3,109.25, 4,662.79 and 1,160.39

Step by Step Solution

1. Step 1: Write the proportion equation
   3,109.25 : 4,662.79 = 1,160.39 : x
2. Step 2: Convert to fraction form
   3,109.25/4,662.79 = 1,160.39/x
3. Step 3: Cross multiply
   3,109.25x = 4,662.79 × 1,160.39
4. Step 4: Simplify right side
   3,109.25x = 5,410,654.89
5. Step 5: Solve for x
   x = 5,410,654.89/3,109.25
6. Step 6: Final answer
   x = 1,740.18