Finding the Fourth Proportional to 1,367.33, 1,886.94 and 777.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,367.33 : 1,886.94 = 777.89 : x
2. Step 2: Convert to fraction form
   1,367.33/1,886.94 = 777.89/x
3. Step 3: Cross multiply
   1,367.33x = 1,886.94 × 777.89
4. Step 4: Simplify right side
   1,367.33x = 1,467,822.32
5. Step 5: Solve for x
   x = 1,467,822.32/1,367.33
6. Step 6: Final answer
   x = 1,073.49