Finding the Fourth Proportional to 2,298.65, 3,172.23 and 1,304.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,298.65 : 3,172.23 = 1,304.12 : x
2. Step 2: Convert to fraction form
   2,298.65/3,172.23 = 1,304.12/x
3. Step 3: Cross multiply
   2,298.65x = 3,172.23 × 1,304.12
4. Step 4: Simplify right side
   2,298.65x = 4,136,968.59
5. Step 5: Solve for x
   x = 4,136,968.59/2,298.65
6. Step 6: Final answer
   x = 1,799.74