Finding the Fourth Proportional to 1,636.50, 2,258.37 and 937.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,636.50 : 2,258.37 = 937.89 : x
2. Step 2: Convert to fraction form
   1,636.50/2,258.37 = 937.89/x
3. Step 3: Cross multiply
   1,636.50x = 2,258.37 × 937.89
4. Step 4: Simplify right side
   1,636.50x = 2,118,102.64
5. Step 5: Solve for x
   x = 2,118,102.64/1,636.50
6. Step 6: Final answer
   x = 1,294.29