Finding the Fourth Proportional to 1,441.35, 1,989.63 and 917.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,441.35 : 1,989.63 = 917.82 : x
2. Step 2: Convert to fraction form
   1,441.35/1,989.63 = 917.82/x
3. Step 3: Cross multiply
   1,441.35x = 1,989.63 × 917.82
4. Step 4: Simplify right side
   1,441.35x = 1,826,122.21
5. Step 5: Solve for x
   x = 1,826,122.21/1,441.35
6. Step 6: Final answer
   x = 1,266.95