Finding the Fourth Proportional to 1,396.89, 1,927.04 and 837.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,396.89 : 1,927.04 = 837.09 : x
2. Step 2: Convert to fraction form
   1,396.89/1,927.04 = 837.09/x
3. Step 3: Cross multiply
   1,396.89x = 1,927.04 × 837.09
4. Step 4: Simplify right side
   1,396.89x = 1,613,101.73
5. Step 5: Solve for x
   x = 1,613,101.73/1,396.89
6. Step 6: Final answer
   x = 1,154.78