Finding the Fourth Proportional to 1,366.56, 1,885.59 and 776.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,366.56 : 1,885.59 = 776.94 : x
2. Step 2: Convert to fraction form
   1,366.56/1,885.59 = 776.94/x
3. Step 3: Cross multiply
   1,366.56x = 1,885.59 × 776.94
4. Step 4: Simplify right side
   1,366.56x = 1,464,990.29
5. Step 5: Solve for x
   x = 1,464,990.29/1,366.56
6. Step 6: Final answer
   x = 1,072.03