Finding the Fourth Proportional to 2,100.09, 3,150.59 and 694.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.09 : 3,150.59 = 694.57 : x
2. Step 2: Convert to fraction form
   2,100.09/3,150.59 = 694.57/x
3. Step 3: Cross multiply
   2,100.09x = 3,150.59 × 694.57
4. Step 4: Simplify right side
   2,100.09x = 2,188,305.30
5. Step 5: Solve for x
   x = 2,188,305.30/2,100.09
6. Step 6: Final answer
   x = 1,042.01