Finding the Fourth Proportional to 2,109.52, 3,164.72 and 722.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.52 : 3,164.72 = 722.96 : x
2. Step 2: Convert to fraction form
   2,109.52/3,164.72 = 722.96/x
3. Step 3: Cross multiply
   2,109.52x = 3,164.72 × 722.96
4. Step 4: Simplify right side
   2,109.52x = 2,287,965.97
5. Step 5: Solve for x
   x = 2,287,965.97/2,109.52
6. Step 6: Final answer
   x = 1,084.59