Finding the Fourth Proportional to 2,460.52, 3,689.34 and 816.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,460.52 : 3,689.34 = 816.63 : x
2. Step 2: Convert to fraction form
   2,460.52/3,689.34 = 816.63/x
3. Step 3: Cross multiply
   2,460.52x = 3,689.34 × 816.63
4. Step 4: Simplify right side
   2,460.52x = 3,012,825.72
5. Step 5: Solve for x
   x = 3,012,825.72/2,460.52
6. Step 6: Final answer
   x = 1,224.47