Finding the Fourth Proportional to 2,890.69, 4,336.23 and 1,159.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,890.69 : 4,336.23 = 1,159.31 : x
2. Step 2: Convert to fraction form
   2,890.69/4,336.23 = 1,159.31/x
3. Step 3: Cross multiply
   2,890.69x = 4,336.23 × 1,159.31
4. Step 4: Simplify right side
   2,890.69x = 5,027,049.99
5. Step 5: Solve for x
   x = 5,027,049.99/2,890.69
6. Step 6: Final answer
   x = 1,739.05