Finding the Fourth Proportional to 2,255.22, 3,111.12 and 1,415.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,255.22 : 3,111.12 = 1,415.50 : x
2. Step 2: Convert to fraction form
   2,255.22/3,111.12 = 1,415.50/x
3. Step 3: Cross multiply
   2,255.22x = 3,111.12 × 1,415.50
4. Step 4: Simplify right side
   2,255.22x = 4,403,790.36
5. Step 5: Solve for x
   x = 4,403,790.36/2,255.22
6. Step 6: Final answer
   x = 1,952.71