Finding the Fourth Proportional to 5,440.52, 8,162.22 and 1,978.12

Step by Step Solution

1. Step 1: Write the proportion equation
   5,440.52 : 8,162.22 = 1,978.12 : x
2. Step 2: Convert to fraction form
   5,440.52/8,162.22 = 1,978.12/x
3. Step 3: Cross multiply
   5,440.52x = 8,162.22 × 1,978.12
4. Step 4: Simplify right side
   5,440.52x = 16,145,850.63
5. Step 5: Solve for x
   x = 16,145,850.63/5,440.52
6. Step 6: Final answer
   x = 2,967.70