Finding the Fourth Proportional to 1,179.86, 1,628.16 and 682.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,179.86 : 1,628.16 = 682.42 : x
2. Step 2: Convert to fraction form
   1,179.86/1,628.16 = 682.42/x
3. Step 3: Cross multiply
   1,179.86x = 1,628.16 × 682.42
4. Step 4: Simplify right side
   1,179.86x = 1,111,088.95
5. Step 5: Solve for x
   x = 1,111,088.95/1,179.86
6. Step 6: Final answer
   x = 941.71