Finding the Fourth Proportional to 667.83, 1,003.52 and 359.91

Step by Step Solution

1. Step 1: Write the proportion equation
   667.83 : 1,003.52 = 359.91 : x
2. Step 2: Convert to fraction form
   667.83/1,003.52 = 359.91/x
3. Step 3: Cross multiply
   667.83x = 1,003.52 × 359.91
4. Step 4: Simplify right side
   667.83x = 361,176.88
5. Step 5: Solve for x
   x = 361,176.88/667.83
6. Step 6: Final answer
   x = 540.82