Finding the Fourth Proportional to 1,367.01, 1,886.36 and 777.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,367.01 : 1,886.36 = 777.58 : x
2. Step 2: Convert to fraction form
   1,367.01/1,886.36 = 777.58/x
3. Step 3: Cross multiply
   1,367.01x = 1,886.36 × 777.58
4. Step 4: Simplify right side
   1,367.01x = 1,466,787.21
5. Step 5: Solve for x
   x = 1,466,787.21/1,367.01
6. Step 6: Final answer
   x = 1,072.99