Finding the Fourth Proportional to 1,194.72, 1,648.82 and 663.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,194.72 : 1,648.82 = 663.71 : x
2. Step 2: Convert to fraction form
   1,194.72/1,648.82 = 663.71/x
3. Step 3: Cross multiply
   1,194.72x = 1,648.82 × 663.71
4. Step 4: Simplify right side
   1,194.72x = 1,094,341.01
5. Step 5: Solve for x
   x = 1,094,341.01/1,194.72
6. Step 6: Final answer
   x = 915.98