Finding the Fourth Proportional to 1,336.55, 1,844.02 and 776.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,336.55 : 1,844.02 = 776.90 : x
2. Step 2: Convert to fraction form
   1,336.55/1,844.02 = 776.90/x
3. Step 3: Cross multiply
   1,336.55x = 1,844.02 × 776.90
4. Step 4: Simplify right side
   1,336.55x = 1,432,624.72
5. Step 5: Solve for x
   x = 1,432,624.72/1,336.55
6. Step 6: Final answer
   x = 1,071.89