Finding the Fourth Proportional to 2,185.43, 3,280.28 and 1,561.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.43 : 3,280.28 = 1,561.46 : x
2. Step 2: Convert to fraction form
   2,185.43/3,280.28 = 1,561.46/x
3. Step 3: Cross multiply
   2,185.43x = 3,280.28 × 1,561.46
4. Step 4: Simplify right side
   2,185.43x = 5,122,001.80
5. Step 5: Solve for x
   x = 5,122,001.80/2,185.43
6. Step 6: Final answer
   x = 2,343.71