Finding the Fourth Proportional to 1,422.04, 1,961.36 and 1,262.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,422.04 : 1,961.36 = 1,262.72 : x
2. Step 2: Convert to fraction form
   1,422.04/1,961.36 = 1,262.72/x
3. Step 3: Cross multiply
   1,422.04x = 1,961.36 × 1,262.72
4. Step 4: Simplify right side
   1,422.04x = 2,476,637.28
5. Step 5: Solve for x
   x = 2,476,637.28/1,422.04
6. Step 6: Final answer
   x = 1,741.61