Finding the Fourth Proportional to 2,656, 3,980.22 and 1,268.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,656 : 3,980.22 = 1,268.20 : x
2. Step 2: Convert to fraction form
   2,656/3,980.22 = 1,268.20/x
3. Step 3: Cross multiply
   2,656x = 3,980.22 × 1,268.20
4. Step 4: Simplify right side
   2,656x = 5,047,715.00
5. Step 5: Solve for x
   x = 5,047,715.00/2,656
6. Step 6: Final answer
   x = 1,900.50