Finding the Fourth Proportional to 1,616.29, 2,230.59 and 917.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,616.29 : 2,230.59 = 917.71 : x
2. Step 2: Convert to fraction form
   1,616.29/2,230.59 = 917.71/x
3. Step 3: Cross multiply
   1,616.29x = 2,230.59 × 917.71
4. Step 4: Simplify right side
   1,616.29x = 2,047,034.75
5. Step 5: Solve for x
   x = 2,047,034.75/1,616.29
6. Step 6: Final answer
   x = 1,266.50