Finding the Fourth Proportional to 1,335.96, 1,843.56 and 776.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,335.96 : 1,843.56 = 776.46 : x
2. Step 2: Convert to fraction form
   1,335.96/1,843.56 = 776.46/x
3. Step 3: Cross multiply
   1,335.96x = 1,843.56 × 776.46
4. Step 4: Simplify right side
   1,335.96x = 1,431,450.60
5. Step 5: Solve for x
   x = 1,431,450.60/1,335.96
6. Step 6: Final answer
   x = 1,071.48