Finding the Fourth Proportional to 1,036.49, 1,429.72 and 663.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,036.49 : 1,429.72 = 663.33 : x
2. Step 2: Convert to fraction form
   1,036.49/1,429.72 = 663.33/x
3. Step 3: Cross multiply
   1,036.49x = 1,429.72 × 663.33
4. Step 4: Simplify right side
   1,036.49x = 948,372.85
5. Step 5: Solve for x
   x = 948,372.85/1,036.49
6. Step 6: Final answer
   x = 914.99