Finding the Fourth Proportional to 2,460.62, 3,689.52 and 816.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,460.62 : 3,689.52 = 816.72 : x
2. Step 2: Convert to fraction form
   2,460.62/3,689.52 = 816.72/x
3. Step 3: Cross multiply
   2,460.62x = 3,689.52 × 816.72
4. Step 4: Simplify right side
   2,460.62x = 3,013,304.77
5. Step 5: Solve for x
   x = 3,013,304.77/2,460.62
6. Step 6: Final answer
   x = 1,224.61