Finding the Fourth Proportional to 1,404.36, 1,938.04 and 774.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.36 : 1,938.04 = 774.88 : x
2. Step 2: Convert to fraction form
   1,404.36/1,938.04 = 774.88/x
3. Step 3: Cross multiply
   1,404.36x = 1,938.04 × 774.88
4. Step 4: Simplify right side
   1,404.36x = 1,501,741.65
5. Step 5: Solve for x
   x = 1,501,741.65/1,404.36
6. Step 6: Final answer
   x = 1,069.34