Finding the Fourth Proportional to 2,299.91, 3,173.63 and 1,291.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,299.91 : 3,173.63 = 1,291.59 : x
2. Step 2: Convert to fraction form
   2,299.91/3,173.63 = 1,291.59/x
3. Step 3: Cross multiply
   2,299.91x = 3,173.63 × 1,291.59
4. Step 4: Simplify right side
   2,299.91x = 4,099,022.31
5. Step 5: Solve for x
   x = 4,099,022.31/2,299.91
6. Step 6: Final answer
   x = 1,782.26