Finding the Fourth Proportional to 2,213.73, 3,055.37 and 1,317.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,213.73 : 3,055.37 = 1,317.67 : x
2. Step 2: Convert to fraction form
   2,213.73/3,055.37 = 1,317.67/x
3. Step 3: Cross multiply
   2,213.73x = 3,055.37 × 1,317.67
4. Step 4: Simplify right side
   2,213.73x = 4,025,955.16
5. Step 5: Solve for x
   x = 4,025,955.16/2,213.73
6. Step 6: Final answer
   x = 1,818.63