Finding the Fourth Proportional to 1,397.96, 1,923.50 and 1,282.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,397.96 : 1,923.50 = 1,282.76 : x
2. Step 2: Convert to fraction form
   1,397.96/1,923.50 = 1,282.76/x
3. Step 3: Cross multiply
   1,397.96x = 1,923.50 × 1,282.76
4. Step 4: Simplify right side
   1,397.96x = 2,467,388.86
5. Step 5: Solve for x
   x = 2,467,388.86/1,397.96
6. Step 6: Final answer
   x = 1,764.99