Finding the Fourth Proportional to 1,406.72, 1,941.25 and 817.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,406.72 : 1,941.25 = 817.26 : x
2. Step 2: Convert to fraction form
   1,406.72/1,941.25 = 817.26/x
3. Step 3: Cross multiply
   1,406.72x = 1,941.25 × 817.26
4. Step 4: Simplify right side
   1,406.72x = 1,586,505.98
5. Step 5: Solve for x
   x = 1,586,505.98/1,406.72
6. Step 6: Final answer
   x = 1,127.81