Finding the Fourth Proportional to 1,093.30, 1,636.73 and 722.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,093.30 : 1,636.73 = 722.43 : x
2. Step 2: Convert to fraction form
   1,093.30/1,636.73 = 722.43/x
3. Step 3: Cross multiply
   1,093.30x = 1,636.73 × 722.43
4. Step 4: Simplify right side
   1,093.30x = 1,182,422.85
5. Step 5: Solve for x
   x = 1,182,422.85/1,093.30
6. Step 6: Final answer
   x = 1,081.52