Finding the Fourth Proportional to 1,334.18, 1,841.55 and 774.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,334.18 : 1,841.55 = 774.89 : x
2. Step 2: Convert to fraction form
   1,334.18/1,841.55 = 774.89/x
3. Step 3: Cross multiply
   1,334.18x = 1,841.55 × 774.89
4. Step 4: Simplify right side
   1,334.18x = 1,427,003.28
5. Step 5: Solve for x
   x = 1,427,003.28/1,334.18
6. Step 6: Final answer
   x = 1,069.58