Finding the Fourth Proportional to 1,180.89, 1,629.56 and 683.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,180.89 : 1,629.56 = 683.57 : x
2. Step 2: Convert to fraction form
   1,180.89/1,629.56 = 683.57/x
3. Step 3: Cross multiply
   1,180.89x = 1,629.56 × 683.57
4. Step 4: Simplify right side
   1,180.89x = 1,113,906.76
5. Step 5: Solve for x
   x = 1,113,906.76/1,180.89
6. Step 6: Final answer
   x = 943.28