Finding the Fourth Proportional to 1,411.16, 2,116.82 and 486.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,411.16 : 2,116.82 = 486.76 : x
2. Step 2: Convert to fraction form
   1,411.16/2,116.82 = 486.76/x
3. Step 3: Cross multiply
   1,411.16x = 2,116.82 × 486.76
4. Step 4: Simplify right side
   1,411.16x = 1,030,383.30
5. Step 5: Solve for x
   x = 1,030,383.30/1,411.16
6. Step 6: Final answer
   x = 730.17