Finding the Fourth Proportional to 1,180.38, 1,628.94 and 683.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,180.38 : 1,628.94 = 683.15 : x
2. Step 2: Convert to fraction form
   1,180.38/1,628.94 = 683.15/x
3. Step 3: Cross multiply
   1,180.38x = 1,628.94 × 683.15
4. Step 4: Simplify right side
   1,180.38x = 1,112,804.78
5. Step 5: Solve for x
   x = 1,112,804.78/1,180.38
6. Step 6: Final answer
   x = 942.75