Finding the Fourth Proportional to 1,366.37, 1,885.59 and 776.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,366.37 : 1,885.59 = 776.93 : x
2. Step 2: Convert to fraction form
   1,366.37/1,885.59 = 776.93/x
3. Step 3: Cross multiply
   1,366.37x = 1,885.59 × 776.93
4. Step 4: Simplify right side
   1,366.37x = 1,464,976.15
5. Step 5: Solve for x
   x = 1,464,976.15/1,366.37
6. Step 6: Final answer
   x = 1,072.17