Finding the Fourth Proportional to 1,397.88, 1,924.83 and 1,266.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,397.88 : 1,924.83 = 1,266.03 : x
2. Step 2: Convert to fraction form
   1,397.88/1,924.83 = 1,266.03/x
3. Step 3: Cross multiply
   1,397.88x = 1,924.83 × 1,266.03
4. Step 4: Simplify right side
   1,397.88x = 2,436,892.52
5. Step 5: Solve for x
   x = 2,436,892.52/1,397.88
6. Step 6: Final answer
   x = 1,743.28