Finding the Fourth Proportional to 2,636.93, 3,954.22 and 787.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.93 : 3,954.22 = 787.43 : x
2. Step 2: Convert to fraction form
   2,636.93/3,954.22 = 787.43/x
3. Step 3: Cross multiply
   2,636.93x = 3,954.22 × 787.43
4. Step 4: Simplify right side
   2,636.93x = 3,113,671.45
5. Step 5: Solve for x
   x = 3,113,671.45/2,636.93
6. Step 6: Final answer
   x = 1,180.79