Finding the Fourth Proportional to 1,019.88, 1,523.58 and 814.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,019.88 : 1,523.58 = 814.83 : x
2. Step 2: Convert to fraction form
   1,019.88/1,523.58 = 814.83/x
3. Step 3: Cross multiply
   1,019.88x = 1,523.58 × 814.83
4. Step 4: Simplify right side
   1,019.88x = 1,241,458.69
5. Step 5: Solve for x
   x = 1,241,458.69/1,019.88
6. Step 6: Final answer
   x = 1,217.26