Finding the Fourth Proportional to 1,266.78, 1,748.46 and 800.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,266.78 : 1,748.46 = 800.94 : x
2. Step 2: Convert to fraction form
   1,266.78/1,748.46 = 800.94/x
3. Step 3: Cross multiply
   1,266.78x = 1,748.46 × 800.94
4. Step 4: Simplify right side
   1,266.78x = 1,400,411.55
5. Step 5: Solve for x
   x = 1,400,411.55/1,266.78
6. Step 6: Final answer
   x = 1,105.49