Finding the Fourth Proportional to 1,214.89, 1,676.32 and 683.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,214.89 : 1,676.32 = 683.73 : x
2. Step 2: Convert to fraction form
   1,214.89/1,676.32 = 683.73/x
3. Step 3: Cross multiply
   1,214.89x = 1,676.32 × 683.73
4. Step 4: Simplify right side
   1,214.89x = 1,146,148.56
5. Step 5: Solve for x
   x = 1,146,148.56/1,214.89
6. Step 6: Final answer
   x = 943.42