Finding the Fourth Proportional to 1,054.21, 1,454.82 and 582.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,054.21 : 1,454.82 = 582.12 : x
2. Step 2: Convert to fraction form
   1,054.21/1,454.82 = 582.12/x
3. Step 3: Cross multiply
   1,054.21x = 1,454.82 × 582.12
4. Step 4: Simplify right side
   1,054.21x = 846,879.82
5. Step 5: Solve for x
   x = 846,879.82/1,054.21
6. Step 6: Final answer
   x = 803.33