Finding the Fourth Proportional to 1,334.50, 1,841.82 and 775.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,334.50 : 1,841.82 = 775.20 : x
2. Step 2: Convert to fraction form
   1,334.50/1,841.82 = 775.20/x
3. Step 3: Cross multiply
   1,334.50x = 1,841.82 × 775.20
4. Step 4: Simplify right side
   1,334.50x = 1,427,778.86
5. Step 5: Solve for x
   x = 1,427,778.86/1,334.50
6. Step 6: Final answer
   x = 1,069.90