Finding the Fourth Proportional to 1,334.50, 1,841.76 and 774.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,334.50 : 1,841.76 = 774.86 : x
2. Step 2: Convert to fraction form
   1,334.50/1,841.76 = 774.86/x
3. Step 3: Cross multiply
   1,334.50x = 1,841.76 × 774.86
4. Step 4: Simplify right side
   1,334.50x = 1,427,106.15
5. Step 5: Solve for x
   x = 1,427,106.15/1,334.50
6. Step 6: Final answer
   x = 1,069.39