Finding the Fourth Proportional to 1,069.34, 1,473.39 and 774.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,069.34 : 1,473.39 = 774.09 : x
2. Step 2: Convert to fraction form
   1,069.34/1,473.39 = 774.09/x
3. Step 3: Cross multiply
   1,069.34x = 1,473.39 × 774.09
4. Step 4: Simplify right side
   1,069.34x = 1,140,536.47
5. Step 5: Solve for x
   x = 1,140,536.47/1,069.34
6. Step 6: Final answer
   x = 1,066.58