Finding the Fourth Proportional to 2,272.59, 3,408.78 and 712.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,272.59 : 3,408.78 = 712.55 : x
2. Step 2: Convert to fraction form
   2,272.59/3,408.78 = 712.55/x
3. Step 3: Cross multiply
   2,272.59x = 3,408.78 × 712.55
4. Step 4: Simplify right side
   2,272.59x = 2,428,926.19
5. Step 5: Solve for x
   x = 2,428,926.19/2,272.59
6. Step 6: Final answer
   x = 1,068.79