Finding the Fourth Proportional to 2,172.18, 3,258.95 and 1,477.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,172.18 : 3,258.95 = 1,477.83 : x
2. Step 2: Convert to fraction form
   2,172.18/3,258.95 = 1,477.83/x
3. Step 3: Cross multiply
   2,172.18x = 3,258.95 × 1,477.83
4. Step 4: Simplify right side
   2,172.18x = 4,816,166.69
5. Step 5: Solve for x
   x = 4,816,166.69/2,172.18
6. Step 6: Final answer
   x = 2,217.20