Finding the Fourth Proportional to 1,662.49, 2,294.37 and 916.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,662.49 : 2,294.37 = 916.60 : x
2. Step 2: Convert to fraction form
   1,662.49/2,294.37 = 916.60/x
3. Step 3: Cross multiply
   1,662.49x = 2,294.37 × 916.60
4. Step 4: Simplify right side
   1,662.49x = 2,103,019.54
5. Step 5: Solve for x
   x = 2,103,019.54/1,662.49
6. Step 6: Final answer
   x = 1,264.98