Finding the Fourth Proportional to 1,396.77, 1,926.86 and 837.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,396.77 : 1,926.86 = 837.27 : x
2. Step 2: Convert to fraction form
   1,396.77/1,926.86 = 837.27/x
3. Step 3: Cross multiply
   1,396.77x = 1,926.86 × 837.27
4. Step 4: Simplify right side
   1,396.77x = 1,613,297.89
5. Step 5: Solve for x
   x = 1,613,297.89/1,396.77
6. Step 6: Final answer
   x = 1,155.02