Finding the Fourth Proportional to 2,889.72, 4,335.39 and 1,159.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,889.72 : 4,335.39 = 1,159.56 : x
2. Step 2: Convert to fraction form
   2,889.72/4,335.39 = 1,159.56/x
3. Step 3: Cross multiply
   2,889.72x = 4,335.39 × 1,159.56
4. Step 4: Simplify right side
   2,889.72x = 5,027,144.83
5. Step 5: Solve for x
   x = 5,027,144.83/2,889.72
6. Step 6: Final answer
   x = 1,739.67