Finding the Fourth Proportional to 2,460.14, 3,690.38 and 816.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,460.14 : 3,690.38 = 816.71 : x
2. Step 2: Convert to fraction form
   2,460.14/3,690.38 = 816.71/x
3. Step 3: Cross multiply
   2,460.14x = 3,690.38 × 816.71
4. Step 4: Simplify right side
   2,460.14x = 3,013,970.25
5. Step 5: Solve for x
   x = 3,013,970.25/2,460.14
6. Step 6: Final answer
   x = 1,225.12