Finding the Fourth Proportional to 1,030.86, 1,544.58 and 665.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,030.86 : 1,544.58 = 665.33 : x
2. Step 2: Convert to fraction form
   1,030.86/1,544.58 = 665.33/x
3. Step 3: Cross multiply
   1,030.86x = 1,544.58 × 665.33
4. Step 4: Simplify right side
   1,030.86x = 1,027,647.69
5. Step 5: Solve for x
   x = 1,027,647.69/1,030.86
6. Step 6: Final answer
   x = 996.88