Finding the Fourth Proportional to 1,180.17, 1,628.24 and 682.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,180.17 : 1,628.24 = 682.70 : x
2. Step 2: Convert to fraction form
   1,180.17/1,628.24 = 682.70/x
3. Step 3: Cross multiply
   1,180.17x = 1,628.24 × 682.70
4. Step 4: Simplify right side
   1,180.17x = 1,111,587.89
5. Step 5: Solve for x
   x = 1,111,587.89/1,180.17
6. Step 6: Final answer
   x = 941.89