Finding the Fourth Proportional to 1,284.72, 1,926.72 and 360.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,284.72 : 1,926.72 = 360.24 : x
2. Step 2: Convert to fraction form
   1,284.72/1,926.72 = 360.24/x
3. Step 3: Cross multiply
   1,284.72x = 1,926.72 × 360.24
4. Step 4: Simplify right side
   1,284.72x = 694,081.61
5. Step 5: Solve for x
   x = 694,081.61/1,284.72
6. Step 6: Final answer
   x = 540.26