Finding the Fourth Proportional to 1,694.20, 2,337.59 and 985.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,694.20 : 2,337.59 = 985.61 : x
2. Step 2: Convert to fraction form
   1,694.20/2,337.59 = 985.61/x
3. Step 3: Cross multiply
   1,694.20x = 2,337.59 × 985.61
4. Step 4: Simplify right side
   1,694.20x = 2,303,960.22
5. Step 5: Solve for x
   x = 2,303,960.22/1,694.20
6. Step 6: Final answer
   x = 1,359.91