Finding the Fourth Proportional to 1,725.81, 2,380.43 and 1,253.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,725.81 : 2,380.43 = 1,253.22 : x
2. Step 2: Convert to fraction form
   1,725.81/2,380.43 = 1,253.22/x
3. Step 3: Cross multiply
   1,725.81x = 2,380.43 × 1,253.22
4. Step 4: Simplify right side
   1,725.81x = 2,983,196.22
5. Step 5: Solve for x
   x = 2,983,196.22/1,725.81
6. Step 6: Final answer
   x = 1,728.58