Finding the Fourth Proportional to 2,346.72, 3,518.40 and 885.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,346.72 : 3,518.40 = 885.12 : x
2. Step 2: Convert to fraction form
   2,346.72/3,518.40 = 885.12/x
3. Step 3: Cross multiply
   2,346.72x = 3,518.40 × 885.12
4. Step 4: Simplify right side
   2,346.72x = 3,114,206.21
5. Step 5: Solve for x
   x = 3,114,206.21/2,346.72
6. Step 6: Final answer
   x = 1,327.05