Finding the Fourth Proportional to 3,084.57, 4,256.69 and 1,687.32

Step by Step Solution

1. Step 1: Write the proportion equation
   3,084.57 : 4,256.69 = 1,687.32 : x
2. Step 2: Convert to fraction form
   3,084.57/4,256.69 = 1,687.32/x
3. Step 3: Cross multiply
   3,084.57x = 4,256.69 × 1,687.32
4. Step 4: Simplify right side
   3,084.57x = 7,182,389.73
5. Step 5: Solve for x
   x = 7,182,389.73/3,084.57
6. Step 6: Final answer
   x = 2,328.49