Finding the Fourth Proportional to 1,277.78, 1,907.34 and 1,096.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,277.78 : 1,907.34 = 1,096.34 : x
2. Step 2: Convert to fraction form
   1,277.78/1,907.34 = 1,096.34/x
3. Step 3: Cross multiply
   1,277.78x = 1,907.34 × 1,096.34
4. Step 4: Simplify right side
   1,277.78x = 2,091,094.86
5. Step 5: Solve for x
   x = 2,091,094.86/1,277.78
6. Step 6: Final answer
   x = 1,636.51