Finding the Fourth Proportional to 2,660.22, 3,991.12 and 1,362.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,660.22 : 3,991.12 = 1,362.60 : x
2. Step 2: Convert to fraction form
   2,660.22/3,991.12 = 1,362.60/x
3. Step 3: Cross multiply
   2,660.22x = 3,991.12 × 1,362.60
4. Step 4: Simplify right side
   2,660.22x = 5,438,300.11
5. Step 5: Solve for x
   x = 5,438,300.11/2,660.22
6. Step 6: Final answer
   x = 2,044.30