Finding the Fourth Proportional to 1,054.37, 1,454.94 and 612.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,054.37 : 1,454.94 = 612.18 : x
2. Step 2: Convert to fraction form
   1,054.37/1,454.94 = 612.18/x
3. Step 3: Cross multiply
   1,054.37x = 1,454.94 × 612.18
4. Step 4: Simplify right side
   1,054.37x = 890,685.17
5. Step 5: Solve for x
   x = 890,685.17/1,054.37
6. Step 6: Final answer
   x = 844.76