Finding the Fourth Proportional to 1,984.30, 2,738.12 and 1,285.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,984.30 : 2,738.12 = 1,285.67 : x
2. Step 2: Convert to fraction form
   1,984.30/2,738.12 = 1,285.67/x
3. Step 3: Cross multiply
   1,984.30x = 2,738.12 × 1,285.67
4. Step 4: Simplify right side
   1,984.30x = 3,520,319.16
5. Step 5: Solve for x
   x = 3,520,319.16/1,984.30
6. Step 6: Final answer
   x = 1,774.09