Finding the Fourth Proportional to 2,636.15, 3,954.76 and 787.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.15 : 3,954.76 = 787.37 : x
2. Step 2: Convert to fraction form
   2,636.15/3,954.76 = 787.37/x
3. Step 3: Cross multiply
   2,636.15x = 3,954.76 × 787.37
4. Step 4: Simplify right side
   2,636.15x = 3,113,837.64
5. Step 5: Solve for x
   x = 3,113,837.64/2,636.15
6. Step 6: Final answer
   x = 1,181.21