Finding the Fourth Proportional to 1,404.11, 1,937.72 and 774.66

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.11 : 1,937.72 = 774.66 : x
2. Step 2: Convert to fraction form
   1,404.11/1,937.72 = 774.66/x
3. Step 3: Cross multiply
   1,404.11x = 1,937.72 × 774.66
4. Step 4: Simplify right side
   1,404.11x = 1,501,074.18
5. Step 5: Solve for x
   x = 1,501,074.18/1,404.11
6. Step 6: Final answer
   x = 1,069.06