Finding the Fourth Proportional to 1,227.47, 1,839.78 and 534.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,227.47 : 1,839.78 = 534.01 : x
2. Step 2: Convert to fraction form
   1,227.47/1,839.78 = 534.01/x
3. Step 3: Cross multiply
   1,227.47x = 1,839.78 × 534.01
4. Step 4: Simplify right side
   1,227.47x = 982,456.32
5. Step 5: Solve for x
   x = 982,456.32/1,227.47
6. Step 6: Final answer
   x = 800.39