Finding the Fourth Proportional to 1,004.34, 1,506.24 and 354.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,004.34 : 1,506.24 = 354.72 : x
2. Step 2: Convert to fraction form
   1,004.34/1,506.24 = 354.72/x
3. Step 3: Cross multiply
   1,004.34x = 1,506.24 × 354.72
4. Step 4: Simplify right side
   1,004.34x = 534,293.45
5. Step 5: Solve for x
   x = 534,293.45/1,004.34
6. Step 6: Final answer
   x = 531.98