Finding the Fourth Proportional to 1,662.17, 2,293.83 and 916.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,662.17 : 2,293.83 = 916.18 : x
2. Step 2: Convert to fraction form
   1,662.17/2,293.83 = 916.18/x
3. Step 3: Cross multiply
   1,662.17x = 2,293.83 × 916.18
4. Step 4: Simplify right side
   1,662.17x = 2,101,561.17
5. Step 5: Solve for x
   x = 2,101,561.17/1,662.17
6. Step 6: Final answer
   x = 1,264.35