Finding the Fourth Proportional to 1,397.45, 1,928.41 and 837.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,397.45 : 1,928.41 = 837.59 : x
2. Step 2: Convert to fraction form
   1,397.45/1,928.41 = 837.59/x
3. Step 3: Cross multiply
   1,397.45x = 1,928.41 × 837.59
4. Step 4: Simplify right side
   1,397.45x = 1,615,205.20
5. Step 5: Solve for x
   x = 1,615,205.20/1,397.45
6. Step 6: Final answer
   x = 1,155.82