Finding the Fourth Proportional to 1,104.82, 1,522.63 and 917.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,104.82 : 1,522.63 = 917.30 : x
2. Step 2: Convert to fraction form
   1,104.82/1,522.63 = 917.30/x
3. Step 3: Cross multiply
   1,104.82x = 1,522.63 × 917.30
4. Step 4: Simplify right side
   1,104.82x = 1,396,708.50
5. Step 5: Solve for x
   x = 1,396,708.50/1,104.82
6. Step 6: Final answer
   x = 1,264.20