Finding the Fourth Proportional to 1,397.34, 1,928.16 and 837.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,397.34 : 1,928.16 = 837.73 : x
2. Step 2: Convert to fraction form
   1,397.34/1,928.16 = 837.73/x
3. Step 3: Cross multiply
   1,397.34x = 1,928.16 × 837.73
4. Step 4: Simplify right side
   1,397.34x = 1,615,277.48
5. Step 5: Solve for x
   x = 1,615,277.48/1,397.34
6. Step 6: Final answer
   x = 1,155.97