Finding the Fourth Proportional to 1,684, 2,323.98 and 985.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,684 : 2,323.98 = 985.42 : x
2. Step 2: Convert to fraction form
   1,684/2,323.98 = 985.42/x
3. Step 3: Cross multiply
   1,684x = 2,323.98 × 985.42
4. Step 4: Simplify right side
   1,684x = 2,290,096.37
5. Step 5: Solve for x
   x = 2,290,096.37/1,684
6. Step 6: Final answer
   x = 1,359.91