Finding the Fourth Proportional to 3,980.22, 5,973.20 and 1,789.26

Step by Step Solution

1. Step 1: Write the proportion equation
   3,980.22 : 5,973.20 = 1,789.26 : x
2. Step 2: Convert to fraction form
   3,980.22/5,973.20 = 1,789.26/x
3. Step 3: Cross multiply
   3,980.22x = 5,973.20 × 1,789.26
4. Step 4: Simplify right side
   3,980.22x = 10,687,607.83
5. Step 5: Solve for x
   x = 10,687,607.83/3,980.22
6. Step 6: Final answer
   x = 2,685.18