Finding the Fourth Proportional to 2,911.71, 4,369.39 and 1,180.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,911.71 : 4,369.39 = 1,180.34 : x
2. Step 2: Convert to fraction form
   2,911.71/4,369.39 = 1,180.34/x
3. Step 3: Cross multiply
   2,911.71x = 4,369.39 × 1,180.34
4. Step 4: Simplify right side
   2,911.71x = 5,157,365.79
5. Step 5: Solve for x
   x = 5,157,365.79/2,911.71
6. Step 6: Final answer
   x = 1,771.25