Finding the Fourth Proportional to 2,298.55, 3,172.29 and 1,304.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,298.55 : 3,172.29 = 1,304.15 : x
2. Step 2: Convert to fraction form
   2,298.55/3,172.29 = 1,304.15/x
3. Step 3: Cross multiply
   2,298.55x = 3,172.29 × 1,304.15
4. Step 4: Simplify right side
   2,298.55x = 4,137,142.76
5. Step 5: Solve for x
   x = 4,137,142.76/2,298.55
6. Step 6: Final answer
   x = 1,799.89