Finding the Fourth Proportional to 1,266.78, 1,901.04 and 536.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,266.78 : 1,901.04 = 536.43 : x
2. Step 2: Convert to fraction form
   1,266.78/1,901.04 = 536.43/x
3. Step 3: Cross multiply
   1,266.78x = 1,901.04 × 536.43
4. Step 4: Simplify right side
   1,266.78x = 1,019,774.89
5. Step 5: Solve for x
   x = 1,019,774.89/1,266.78
6. Step 6: Final answer
   x = 805.01