Finding the Fourth Proportional to 1,213.34, 1,817.27 and 725.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,213.34 : 1,817.27 = 725.37 : x
2. Step 2: Convert to fraction form
   1,213.34/1,817.27 = 725.37/x
3. Step 3: Cross multiply
   1,213.34x = 1,817.27 × 725.37
4. Step 4: Simplify right side
   1,213.34x = 1,318,185.87
5. Step 5: Solve for x
   x = 1,318,185.87/1,213.34
6. Step 6: Final answer
   x = 1,086.41