Finding the Fourth Proportional to 1,778.86, 2,667.76 and 682.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,778.86 : 2,667.76 = 682.63 : x
2. Step 2: Convert to fraction form
   1,778.86/2,667.76 = 682.63/x
3. Step 3: Cross multiply
   1,778.86x = 2,667.76 × 682.63
4. Step 4: Simplify right side
   1,778.86x = 1,821,093.01
5. Step 5: Solve for x
   x = 1,821,093.01/1,778.86
6. Step 6: Final answer
   x = 1,023.74