Finding the Fourth Proportional to 1,214.33, 1,818.89 and 694.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,214.33 : 1,818.89 = 694.06 : x
2. Step 2: Convert to fraction form
   1,214.33/1,818.89 = 694.06/x
3. Step 3: Cross multiply
   1,214.33x = 1,818.89 × 694.06
4. Step 4: Simplify right side
   1,214.33x = 1,262,410.78
5. Step 5: Solve for x
   x = 1,262,410.78/1,214.33
6. Step 6: Final answer
   x = 1,039.59