Finding the Fourth Proportional to 2,636.46, 3,953.51 and 787.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,636.46 : 3,953.51 = 787.08 : x
2. Step 2: Convert to fraction form
   2,636.46/3,953.51 = 787.08/x
3. Step 3: Cross multiply
   2,636.46x = 3,953.51 × 787.08
4. Step 4: Simplify right side
   2,636.46x = 3,111,724.72
5. Step 5: Solve for x
   x = 3,111,724.72/2,636.46
6. Step 6: Final answer
   x = 1,180.27