Finding the Fourth Proportional to 1,195.47, 1,649.83 and 664.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,195.47 : 1,649.83 = 664.43 : x
2. Step 2: Convert to fraction form
   1,195.47/1,649.83 = 664.43/x
3. Step 3: Cross multiply
   1,195.47x = 1,649.83 × 664.43
4. Step 4: Simplify right side
   1,195.47x = 1,096,196.55
5. Step 5: Solve for x
   x = 1,096,196.55/1,195.47
6. Step 6: Final answer
   x = 916.96