Finding the Fourth Proportional to 1,397.27, 1,927.53 and 837.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,397.27 : 1,927.53 = 837.56 : x
2. Step 2: Convert to fraction form
   1,397.27/1,927.53 = 837.56/x
3. Step 3: Cross multiply
   1,397.27x = 1,927.53 × 837.56
4. Step 4: Simplify right side
   1,397.27x = 1,614,426.85
5. Step 5: Solve for x
   x = 1,614,426.85/1,397.27
6. Step 6: Final answer
   x = 1,155.41