Finding the Fourth Proportional to 1,422.58, 2,132.49 and 729.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,422.58 : 2,132.49 = 729.57 : x
2. Step 2: Convert to fraction form
   1,422.58/2,132.49 = 729.57/x
3. Step 3: Cross multiply
   1,422.58x = 2,132.49 × 729.57
4. Step 4: Simplify right side
   1,422.58x = 1,555,800.73
5. Step 5: Solve for x
   x = 1,555,800.73/1,422.58
6. Step 6: Final answer
   x = 1,093.65