Finding the Fourth Proportional to 1,282.88, 1,770.54 and 723.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,282.88 : 1,770.54 = 723.52 : x
2. Step 2: Convert to fraction form
   1,282.88/1,770.54 = 723.52/x
3. Step 3: Cross multiply
   1,282.88x = 1,770.54 × 723.52
4. Step 4: Simplify right side
   1,282.88x = 1,281,019.29
5. Step 5: Solve for x
   x = 1,281,019.29/1,282.88
6. Step 6: Final answer
   x = 998.55