Finding the Fourth Proportional to 2,217.50, 3,060.56 and 1,555.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,217.50 : 3,060.56 = 1,555.37 : x
2. Step 2: Convert to fraction form
   2,217.50/3,060.56 = 1,555.37/x
3. Step 3: Cross multiply
   2,217.50x = 3,060.56 × 1,555.37
4. Step 4: Simplify right side
   2,217.50x = 4,760,295.43
5. Step 5: Solve for x
   x = 4,760,295.43/2,217.50
6. Step 6: Final answer
   x = 2,146.69