Finding the Fourth Proportional to 1,180.09, 1,628.56 and 682.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,180.09 : 1,628.56 = 682.75 : x
2. Step 2: Convert to fraction form
   1,180.09/1,628.56 = 682.75/x
3. Step 3: Cross multiply
   1,180.09x = 1,628.56 × 682.75
4. Step 4: Simplify right side
   1,180.09x = 1,111,899.34
5. Step 5: Solve for x
   x = 1,111,899.34/1,180.09
6. Step 6: Final answer
   x = 942.22