Finding the Fourth Proportional to 1,137.84, 1,708.37 and 1,085.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,137.84 : 1,708.37 = 1,085.59 : x
2. Step 2: Convert to fraction form
   1,137.84/1,708.37 = 1,085.59/x
3. Step 3: Cross multiply
   1,137.84x = 1,708.37 × 1,085.59
4. Step 4: Simplify right side
   1,137.84x = 1,854,589.39
5. Step 5: Solve for x
   x = 1,854,589.39/1,137.84
6. Step 6: Final answer
   x = 1,629.92