Finding the Fourth Proportional to 2,299.72, 3,172.86 and 1,304.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,299.72 : 3,172.86 = 1,304.64 : x
2. Step 2: Convert to fraction form
   2,299.72/3,172.86 = 1,304.64/x
3. Step 3: Cross multiply
   2,299.72x = 3,172.86 × 1,304.64
4. Step 4: Simplify right side
   2,299.72x = 4,139,440.07
5. Step 5: Solve for x
   x = 4,139,440.07/2,299.72
6. Step 6: Final answer
   x = 1,799.98