Finding the Fourth Proportional to 1,724.35, 2,379.50 and 1,025.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,724.35 : 2,379.50 = 1,025.59 : x
2. Step 2: Convert to fraction form
   1,724.35/2,379.50 = 1,025.59/x
3. Step 3: Cross multiply
   1,724.35x = 2,379.50 × 1,025.59
4. Step 4: Simplify right side
   1,724.35x = 2,440,386.28
5. Step 5: Solve for x
   x = 2,440,386.28/1,724.35
6. Step 6: Final answer
   x = 1,415.25