Finding the Fourth Proportional to 1,054.12, 1,454.82 and 612.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,054.12 : 1,454.82 = 612.04 : x
2. Step 2: Convert to fraction form
   1,054.12/1,454.82 = 612.04/x
3. Step 3: Cross multiply
   1,054.12x = 1,454.82 × 612.04
4. Step 4: Simplify right side
   1,054.12x = 890,408.03
5. Step 5: Solve for x
   x = 890,408.03/1,054.12
6. Step 6: Final answer
   x = 844.69