Finding the Fourth Proportional to 1,725.56, 2,589.83 and 904.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,725.56 : 2,589.83 = 904.40 : x
2. Step 2: Convert to fraction form
   1,725.56/2,589.83 = 904.40/x
3. Step 3: Cross multiply
   1,725.56x = 2,589.83 × 904.40
4. Step 4: Simplify right side
   1,725.56x = 2,342,242.25
5. Step 5: Solve for x
   x = 2,342,242.25/1,725.56
6. Step 6: Final answer
   x = 1,357.38