Finding the Fourth Proportional to 1,680.38, 2,523.40 and 1,096.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,680.38 : 2,523.40 = 1,096.37 : x
2. Step 2: Convert to fraction form
   1,680.38/2,523.40 = 1,096.37/x
3. Step 3: Cross multiply
   1,680.38x = 2,523.40 × 1,096.37
4. Step 4: Simplify right side
   1,680.38x = 2,766,580.06
5. Step 5: Solve for x
   x = 2,766,580.06/1,680.38
6. Step 6: Final answer
   x = 1,646.40