Finding the Fourth Proportional to 1,083.05, 1,494.72 and 663.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,083.05 : 1,494.72 = 663.68 : x
2. Step 2: Convert to fraction form
   1,083.05/1,494.72 = 663.68/x
3. Step 3: Cross multiply
   1,083.05x = 1,494.72 × 663.68
4. Step 4: Simplify right side
   1,083.05x = 992,015.77
5. Step 5: Solve for x
   x = 992,015.77/1,083.05
6. Step 6: Final answer
   x = 915.95