Finding the Fourth Proportional to 2,261.22, 3,118.82 and 1,421.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,261.22 : 3,118.82 = 1,421.25 : x
2. Step 2: Convert to fraction form
   2,261.22/3,118.82 = 1,421.25/x
3. Step 3: Cross multiply
   2,261.22x = 3,118.82 × 1,421.25
4. Step 4: Simplify right side
   2,261.22x = 4,432,615.82
5. Step 5: Solve for x
   x = 4,432,615.82/2,261.22
6. Step 6: Final answer
   x = 1,960.28