Finding the Fourth Proportional to 1,003.96, 1,506.15 and 354.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,003.96 : 1,506.15 = 354.52 : x
2. Step 2: Convert to fraction form
   1,003.96/1,506.15 = 354.52/x
3. Step 3: Cross multiply
   1,003.96x = 1,506.15 × 354.52
4. Step 4: Simplify right side
   1,003.96x = 533,960.30
5. Step 5: Solve for x
   x = 533,960.30/1,003.96
6. Step 6: Final answer
   x = 531.85