Finding the Fourth Proportional to 1,194.59, 1,648.53 and 663.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,194.59 : 1,648.53 = 663.56 : x
2. Step 2: Convert to fraction form
   1,194.59/1,648.53 = 663.56/x
3. Step 3: Cross multiply
   1,194.59x = 1,648.53 × 663.56
4. Step 4: Simplify right side
   1,194.59x = 1,093,890.32
5. Step 5: Solve for x
   x = 1,093,890.32/1,194.59
6. Step 6: Final answer
   x = 915.71