Finding the Fourth Proportional to 2,315.78, 3,195.78 and 1,267.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,315.78 : 3,195.78 = 1,267.84 : x
2. Step 2: Convert to fraction form
   2,315.78/3,195.78 = 1,267.84/x
3. Step 3: Cross multiply
   2,315.78x = 3,195.78 × 1,267.84
4. Step 4: Simplify right side
   2,315.78x = 4,051,737.72
5. Step 5: Solve for x
   x = 4,051,737.72/2,315.78
6. Step 6: Final answer
   x = 1,749.62