Finding the Fourth Proportional to 2,346.24, 3,520.72 and 885.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,346.24 : 3,520.72 = 885.12 : x
2. Step 2: Convert to fraction form
   2,346.24/3,520.72 = 885.12/x
3. Step 3: Cross multiply
   2,346.24x = 3,520.72 × 885.12
4. Step 4: Simplify right side
   2,346.24x = 3,116,259.69
5. Step 5: Solve for x
   x = 3,116,259.69/2,346.24
6. Step 6: Final answer
   x = 1,328.19