Finding the Fourth Proportional to 1,180.07, 1,628.10 and 682.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,180.07 : 1,628.10 = 682.63 : x
2. Step 2: Convert to fraction form
   1,180.07/1,628.10 = 682.63/x
3. Step 3: Cross multiply
   1,180.07x = 1,628.10 × 682.63
4. Step 4: Simplify right side
   1,180.07x = 1,111,385.83
5. Step 5: Solve for x
   x = 1,111,385.83/1,180.07
6. Step 6: Final answer
   x = 941.80