Finding the Fourth Proportional to 1,282.94, 1,770.38 and 723.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,282.94 : 1,770.38 = 723.42 : x
2. Step 2: Convert to fraction form
   1,282.94/1,770.38 = 723.42/x
3. Step 3: Cross multiply
   1,282.94x = 1,770.38 × 723.42
4. Step 4: Simplify right side
   1,282.94x = 1,280,728.30
5. Step 5: Solve for x
   x = 1,280,728.30/1,282.94
6. Step 6: Final answer
   x = 998.28