Finding the Fourth Proportional to 3,718.79, 5,131.78 and 2,225.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,718.79 : 5,131.78 = 2,225.83 : x
2. Step 2: Convert to fraction form
   3,718.79/5,131.78 = 2,225.83/x
3. Step 3: Cross multiply
   3,718.79x = 5,131.78 × 2,225.83
4. Step 4: Simplify right side
   3,718.79x = 11,422,469.88
5. Step 5: Solve for x
   x = 11,422,469.88/3,718.79
6. Step 6: Final answer
   x = 3,071.56