Finding the Fourth Proportional to 2,299.31, 3,173.26 and 1,304.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,299.31 : 3,173.26 = 1,304.91 : x
2. Step 2: Convert to fraction form
   2,299.31/3,173.26 = 1,304.91/x
3. Step 3: Cross multiply
   2,299.31x = 3,173.26 × 1,304.91
4. Step 4: Simplify right side
   2,299.31x = 4,140,818.71
5. Step 5: Solve for x
   x = 4,140,818.71/2,299.31
6. Step 6: Final answer
   x = 1,800.90