Finding the Fourth Proportional to 3,456.69, 5,184.72 and 1,812.75

Step by Step Solution

1. Step 1: Write the proportion equation
   3,456.69 : 5,184.72 = 1,812.75 : x
2. Step 2: Convert to fraction form
   3,456.69/5,184.72 = 1,812.75/x
3. Step 3: Cross multiply
   3,456.69x = 5,184.72 × 1,812.75
4. Step 4: Simplify right side
   3,456.69x = 9,398,601.18
5. Step 5: Solve for x
   x = 9,398,601.18/3,456.69
6. Step 6: Final answer
   x = 2,718.96