Finding the Fourth Proportional to 2,316.64, 3,196.94 and 1,268.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,316.64 : 3,196.94 = 1,268.72 : x
2. Step 2: Convert to fraction form
   2,316.64/3,196.94 = 1,268.72/x
3. Step 3: Cross multiply
   2,316.64x = 3,196.94 × 1,268.72
4. Step 4: Simplify right side
   2,316.64x = 4,056,021.72
5. Step 5: Solve for x
   x = 4,056,021.72/2,316.64
6. Step 6: Final answer
   x = 1,750.82