Finding the Fourth Proportional to 1,265.70, 1,896.72 and 534.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,265.70 : 1,896.72 = 534.27 : x
2. Step 2: Convert to fraction form
   1,265.70/1,896.72 = 534.27/x
3. Step 3: Cross multiply
   1,265.70x = 1,896.72 × 534.27
4. Step 4: Simplify right side
   1,265.70x = 1,013,360.59
5. Step 5: Solve for x
   x = 1,013,360.59/1,265.70
6. Step 6: Final answer
   x = 800.63