Finding the Fourth Proportional to 1,397.50, 1,928.95 and 925.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,397.50 : 1,928.95 = 925.47 : x
2. Step 2: Convert to fraction form
   1,397.50/1,928.95 = 925.47/x
3. Step 3: Cross multiply
   1,397.50x = 1,928.95 × 925.47
4. Step 4: Simplify right side
   1,397.50x = 1,785,183.04
5. Step 5: Solve for x
   x = 1,785,183.04/1,397.50
6. Step 6: Final answer
   x = 1,277.41