Finding the Fourth Proportional to 1,662.50, 2,294.38 and 916.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,662.50 : 2,294.38 = 916.60 : x
2. Step 2: Convert to fraction form
   1,662.50/2,294.38 = 916.60/x
3. Step 3: Cross multiply
   1,662.50x = 2,294.38 × 916.60
4. Step 4: Simplify right side
   1,662.50x = 2,103,028.71
5. Step 5: Solve for x
   x = 2,103,028.71/1,662.50
6. Step 6: Final answer
   x = 1,264.98