Finding the Fourth Proportional to 2,460.52, 3,690.60 and 817.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,460.52 : 3,690.60 = 817.12 : x
2. Step 2: Convert to fraction form
   2,460.52/3,690.60 = 817.12/x
3. Step 3: Cross multiply
   2,460.52x = 3,690.60 × 817.12
4. Step 4: Simplify right side
   2,460.52x = 3,015,663.07
5. Step 5: Solve for x
   x = 3,015,663.07/2,460.52
6. Step 6: Final answer
   x = 1,225.62