Finding the Fourth Proportional to 1,406.86, 1,941.30 and 817.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,406.86 : 1,941.30 = 817.30 : x
2. Step 2: Convert to fraction form
   1,406.86/1,941.30 = 817.30/x
3. Step 3: Cross multiply
   1,406.86x = 1,941.30 × 817.30
4. Step 4: Simplify right side
   1,406.86x = 1,586,624.49
5. Step 5: Solve for x
   x = 1,586,624.49/1,406.86
6. Step 6: Final answer
   x = 1,127.78