Finding the Fourth Proportional to 2,185.18, 3,275.46 and 1,490.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.18 : 3,275.46 = 1,490.12 : x
2. Step 2: Convert to fraction form
   2,185.18/3,275.46 = 1,490.12/x
3. Step 3: Cross multiply
   2,185.18x = 3,275.46 × 1,490.12
4. Step 4: Simplify right side
   2,185.18x = 4,880,828.46
5. Step 5: Solve for x
   x = 4,880,828.46/2,185.18
6. Step 6: Final answer
   x = 2,233.60