Finding the Fourth Proportional to 1,114.89, 1,669.23 and 725.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,114.89 : 1,669.23 = 725.34 : x
2. Step 2: Convert to fraction form
   1,114.89/1,669.23 = 725.34/x
3. Step 3: Cross multiply
   1,114.89x = 1,669.23 × 725.34
4. Step 4: Simplify right side
   1,114.89x = 1,210,759.29
5. Step 5: Solve for x
   x = 1,210,759.29/1,114.89
6. Step 6: Final answer
   x = 1,085.99