Finding the Fourth Proportional to 1,662.09, 2,293.69 and 916.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,662.09 : 2,293.69 = 916.10 : x
2. Step 2: Convert to fraction form
   1,662.09/2,293.69 = 916.10/x
3. Step 3: Cross multiply
   1,662.09x = 2,293.69 × 916.10
4. Step 4: Simplify right side
   1,662.09x = 2,101,249.41
5. Step 5: Solve for x
   x = 2,101,249.41/1,662.09
6. Step 6: Final answer
   x = 1,264.22