Finding the Fourth Proportional to 1,336.42, 1,844.16 and 776.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,336.42 : 1,844.16 = 776.89 : x
2. Step 2: Convert to fraction form
   1,336.42/1,844.16 = 776.89/x
3. Step 3: Cross multiply
   1,336.42x = 1,844.16 × 776.89
4. Step 4: Simplify right side
   1,336.42x = 1,432,709.46
5. Step 5: Solve for x
   x = 1,432,709.46/1,336.42
6. Step 6: Final answer
   x = 1,072.05