Finding the Fourth Proportional to 1,426.05, 1,968.05 and 828.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.05 : 1,968.05 = 828.73 : x
2. Step 2: Convert to fraction form
   1,426.05/1,968.05 = 828.73/x
3. Step 3: Cross multiply
   1,426.05x = 1,968.05 × 828.73
4. Step 4: Simplify right side
   1,426.05x = 1,630,981.95
5. Step 5: Solve for x
   x = 1,630,981.95/1,426.05
6. Step 6: Final answer
   x = 1,143.71