Finding the Fourth Proportional to 1,422.56, 2,132.48 and 1,305.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,422.56 : 2,132.48 = 1,305.82 : x
2. Step 2: Convert to fraction form
   1,422.56/2,132.48 = 1,305.82/x
3. Step 3: Cross multiply
   1,422.56x = 2,132.48 × 1,305.82
4. Step 4: Simplify right side
   1,422.56x = 2,784,633.62
5. Step 5: Solve for x
   x = 2,784,633.62/1,422.56
6. Step 6: Final answer
   x = 1,957.48