Finding the Fourth Proportional to 1,662.34, 2,293.90 and 916.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,662.34 : 2,293.90 = 916.25 : x
2. Step 2: Convert to fraction form
   1,662.34/2,293.90 = 916.25/x
3. Step 3: Cross multiply
   1,662.34x = 2,293.90 × 916.25
4. Step 4: Simplify right side
   1,662.34x = 2,101,781.29
5. Step 5: Solve for x
   x = 2,101,781.29/1,662.34
6. Step 6: Final answer
   x = 1,264.35