Finding the Fourth Proportional to 2,913.86, 4,370.72 and 722.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,913.86 : 4,370.72 = 722.56 : x
2. Step 2: Convert to fraction form
   2,913.86/4,370.72 = 722.56/x
3. Step 3: Cross multiply
   2,913.86x = 4,370.72 × 722.56
4. Step 4: Simplify right side
   2,913.86x = 3,158,098.32
5. Step 5: Solve for x
   x = 3,158,098.32/2,913.86
6. Step 6: Final answer
   x = 1,083.82