Finding the Fourth Proportional to 5,443.34, 8,168.64 and 1,980.59

Step by Step Solution

1. Step 1: Write the proportion equation
   5,443.34 : 8,168.64 = 1,980.59 : x
2. Step 2: Convert to fraction form
   5,443.34/8,168.64 = 1,980.59/x
3. Step 3: Cross multiply
   5,443.34x = 8,168.64 × 1,980.59
4. Step 4: Simplify right side
   5,443.34x = 16,178,685.85
5. Step 5: Solve for x
   x = 16,178,685.85/5,443.34
6. Step 6: Final answer
   x = 2,972.20