Finding the Fourth Proportional to 1,510.50, 2,266.61 and 817.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,510.50 : 2,266.61 = 817.16 : x
2. Step 2: Convert to fraction form
   1,510.50/2,266.61 = 817.16/x
3. Step 3: Cross multiply
   1,510.50x = 2,266.61 × 817.16
4. Step 4: Simplify right side
   1,510.50x = 1,852,167.61
5. Step 5: Solve for x
   x = 1,852,167.61/1,510.50
6. Step 6: Final answer
   x = 1,226.20