Finding the Fourth Proportional to 1,196.64, 1,654.20 and 949.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,196.64 : 1,654.20 = 949.68 : x
2. Step 2: Convert to fraction form
   1,196.64/1,654.20 = 949.68/x
3. Step 3: Cross multiply
   1,196.64x = 1,654.20 × 949.68
4. Step 4: Simplify right side
   1,196.64x = 1,570,960.66
5. Step 5: Solve for x
   x = 1,570,960.66/1,196.64
6. Step 6: Final answer
   x = 1,312.81