Finding the Fourth Proportional to 2,298.65, 3,168.46 and 1,812.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,298.65 : 3,168.46 = 1,812.78 : x
2. Step 2: Convert to fraction form
   2,298.65/3,168.46 = 1,812.78/x
3. Step 3: Cross multiply
   2,298.65x = 3,168.46 × 1,812.78
4. Step 4: Simplify right side
   2,298.65x = 5,743,720.92
5. Step 5: Solve for x
   x = 5,743,720.92/2,298.65
6. Step 6: Final answer
   x = 2,498.74