Finding the Fourth Proportional to 2,871.72, 4,308.06 and 1,141.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,871.72 : 4,308.06 = 1,141.80 : x
2. Step 2: Convert to fraction form
   2,871.72/4,308.06 = 1,141.80/x
3. Step 3: Cross multiply
   2,871.72x = 4,308.06 × 1,141.80
4. Step 4: Simplify right side
   2,871.72x = 4,918,942.91
5. Step 5: Solve for x
   x = 4,918,942.91/2,871.72
6. Step 6: Final answer
   x = 1,712.89