Finding the Fourth Proportional to 1,724.55, 2,585.88 and 683.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,724.55 : 2,585.88 = 683.50 : x
2. Step 2: Convert to fraction form
   1,724.55/2,585.88 = 683.50/x
3. Step 3: Cross multiply
   1,724.55x = 2,585.88 × 683.50
4. Step 4: Simplify right side
   1,724.55x = 1,767,442.52
5. Step 5: Solve for x
   x = 1,767,442.52/1,724.55
6. Step 6: Final answer
   x = 1,024.87