Finding the Fourth Proportional to 5,443.06, 8,168.22 and 1,980.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,443.06 : 8,168.22 = 1,980.31 : x
2. Step 2: Convert to fraction form
   5,443.06/8,168.22 = 1,980.31/x
3. Step 3: Cross multiply
   5,443.06x = 8,168.22 × 1,980.31
4. Step 4: Simplify right side
   5,443.06x = 16,175,587.33
5. Step 5: Solve for x
   x = 16,175,587.33/5,443.06
6. Step 6: Final answer
   x = 2,971.78