Finding the Fourth Proportional to 1,082.83, 1,494.22 and 663.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,082.83 : 1,494.22 = 663.31 : x
2. Step 2: Convert to fraction form
   1,082.83/1,494.22 = 663.31/x
3. Step 3: Cross multiply
   1,082.83x = 1,494.22 × 663.31
4. Step 4: Simplify right side
   1,082.83x = 991,131.07
5. Step 5: Solve for x
   x = 991,131.07/1,082.83
6. Step 6: Final answer
   x = 915.32