Finding the Fourth Proportional to 1,009.52, 1,513.92 and 360.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,009.52 : 1,513.92 = 360.08 : x
2. Step 2: Convert to fraction form
   1,009.52/1,513.92 = 360.08/x
3. Step 3: Cross multiply
   1,009.52x = 1,513.92 × 360.08
4. Step 4: Simplify right side
   1,009.52x = 545,132.31
5. Step 5: Solve for x
   x = 545,132.31/1,009.52
6. Step 6: Final answer
   x = 539.99