Finding the Fourth Proportional to 805.89, 1,112.15 and 451.82

Step by Step Solution

1. Step 1: Write the proportion equation
   805.89 : 1,112.15 = 451.82 : x
2. Step 2: Convert to fraction form
   805.89/1,112.15 = 451.82/x
3. Step 3: Cross multiply
   805.89x = 1,112.15 × 451.82
4. Step 4: Simplify right side
   805.89x = 502,495.52
5. Step 5: Solve for x
   x = 502,495.52/805.89
6. Step 6: Final answer
   x = 623.53