Finding the Fourth Proportional to 1,404.23, 1,937.81 and 774.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.23 : 1,937.81 = 774.74 : x
2. Step 2: Convert to fraction form
   1,404.23/1,937.81 = 774.74/x
3. Step 3: Cross multiply
   1,404.23x = 1,937.81 × 774.74
4. Step 4: Simplify right side
   1,404.23x = 1,501,294.80
5. Step 5: Solve for x
   x = 1,501,294.80/1,404.23
6. Step 6: Final answer
   x = 1,069.13