Finding the Fourth Proportional to 1,396.99, 1,927.42 and 837.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,396.99 : 1,927.42 = 837.19 : x
2. Step 2: Convert to fraction form
   1,396.99/1,927.42 = 837.19/x
3. Step 3: Cross multiply
   1,396.99x = 1,927.42 × 837.19
4. Step 4: Simplify right side
   1,396.99x = 1,613,616.75
5. Step 5: Solve for x
   x = 1,613,616.75/1,396.99
6. Step 6: Final answer
   x = 1,155.07