Finding the Fourth Proportional to 2,738.40, 4,105.35 and 1,179.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,738.40 : 4,105.35 = 1,179.60 : x
2. Step 2: Convert to fraction form
   2,738.40/4,105.35 = 1,179.60/x
3. Step 3: Cross multiply
   2,738.40x = 4,105.35 × 1,179.60
4. Step 4: Simplify right side
   2,738.40x = 4,842,670.86
5. Step 5: Solve for x
   x = 4,842,670.86/2,738.40
6. Step 6: Final answer
   x = 1,768.43