Finding the Fourth Proportional to 2,272.95, 3,136.59 and 1,278.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,272.95 : 3,136.59 = 1,278.27 : x
2. Step 2: Convert to fraction form
   2,272.95/3,136.59 = 1,278.27/x
3. Step 3: Cross multiply
   2,272.95x = 3,136.59 × 1,278.27
4. Step 4: Simplify right side
   2,272.95x = 4,009,408.90
5. Step 5: Solve for x
   x = 4,009,408.90/2,272.95
6. Step 6: Final answer
   x = 1,763.97