Finding the Fourth Proportional to 1,443.08, 2,164.62 and 620.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.08 : 2,164.62 = 620.18 : x
2. Step 2: Convert to fraction form
   1,443.08/2,164.62 = 620.18/x
3. Step 3: Cross multiply
   1,443.08x = 2,164.62 × 620.18
4. Step 4: Simplify right side
   1,443.08x = 1,342,454.03
5. Step 5: Solve for x
   x = 1,342,454.03/1,443.08
6. Step 6: Final answer
   x = 930.27