Finding the Fourth Proportional to 1,435.74, 2,150.55 and 694.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.74 : 2,150.55 = 694.23 : x
2. Step 2: Convert to fraction form
   1,435.74/2,150.55 = 694.23/x
3. Step 3: Cross multiply
   1,435.74x = 2,150.55 × 694.23
4. Step 4: Simplify right side
   1,435.74x = 1,492,976.33
5. Step 5: Solve for x
   x = 1,492,976.33/1,435.74
6. Step 6: Final answer
   x = 1,039.87