Finding the Fourth Proportional to 1,010.58, 1,394.46 and 590.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,010.58 : 1,394.46 = 590.82 : x
2. Step 2: Convert to fraction form
   1,010.58/1,394.46 = 590.82/x
3. Step 3: Cross multiply
   1,010.58x = 1,394.46 × 590.82
4. Step 4: Simplify right side
   1,010.58x = 823,874.86
5. Step 5: Solve for x
   x = 823,874.86/1,010.58
6. Step 6: Final answer
   x = 815.25