Finding the Fourth Proportional to 2,245.86, 3,367.71 and 764.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,245.86 : 3,367.71 = 764.55 : x
2. Step 2: Convert to fraction form
   2,245.86/3,367.71 = 764.55/x
3. Step 3: Cross multiply
   2,245.86x = 3,367.71 × 764.55
4. Step 4: Simplify right side
   2,245.86x = 2,574,782.68
5. Step 5: Solve for x
   x = 2,574,782.68/2,245.86
6. Step 6: Final answer
   x = 1,146.46