Finding the Fourth Proportional to 1,367.28, 1,888.56 and 1,201.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,367.28 : 1,888.56 = 1,201.68 : x
2. Step 2: Convert to fraction form
   1,367.28/1,888.56 = 1,201.68/x
3. Step 3: Cross multiply
   1,367.28x = 1,888.56 × 1,201.68
4. Step 4: Simplify right side
   1,367.28x = 2,269,444.78
5. Step 5: Solve for x
   x = 2,269,444.78/1,367.28
6. Step 6: Final answer
   x = 1,659.82