Finding the Fourth Proportional to 1,403.69, 1,936.99 and 774.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,403.69 : 1,936.99 = 774.22 : x
2. Step 2: Convert to fraction form
   1,403.69/1,936.99 = 774.22/x
3. Step 3: Cross multiply
   1,403.69x = 1,936.99 × 774.22
4. Step 4: Simplify right side
   1,403.69x = 1,499,648.53
5. Step 5: Solve for x
   x = 1,499,648.53/1,403.69
6. Step 6: Final answer
   x = 1,068.36