Finding the Fourth Proportional to 1,196.48, 1,793.19 and 647.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,196.48 : 1,793.19 = 647.30 : x
2. Step 2: Convert to fraction form
   1,196.48/1,793.19 = 647.30/x
3. Step 3: Cross multiply
   1,196.48x = 1,793.19 × 647.30
4. Step 4: Simplify right side
   1,196.48x = 1,160,731.89
5. Step 5: Solve for x
   x = 1,160,731.89/1,196.48
6. Step 6: Final answer
   x = 970.12