Finding the Fourth Proportional to 2,636.19, 3,954.69 and 787.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.19 : 3,954.69 = 787.10 : x
2. Step 2: Convert to fraction form
   2,636.19/3,954.69 = 787.10/x
3. Step 3: Cross multiply
   2,636.19x = 3,954.69 × 787.10
4. Step 4: Simplify right side
   2,636.19x = 3,112,716.73
5. Step 5: Solve for x
   x = 3,112,716.73/2,636.19
6. Step 6: Final answer
   x = 1,180.76