Finding the Fourth Proportional to 2,890.72, 4,336.89 and 1,160.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,890.72 : 4,336.89 = 1,160.56 : x
2. Step 2: Convert to fraction form
   2,890.72/4,336.89 = 1,160.56/x
3. Step 3: Cross multiply
   2,890.72x = 4,336.89 × 1,160.56
4. Step 4: Simplify right side
   2,890.72x = 5,033,221.06
5. Step 5: Solve for x
   x = 5,033,221.06/2,890.72
6. Step 6: Final answer
   x = 1,741.17