Finding the Fourth Proportional to 1,375.72, 1,897.83 and 903.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,375.72 : 1,897.83 = 903.43 : x
2. Step 2: Convert to fraction form
   1,375.72/1,897.83 = 903.43/x
3. Step 3: Cross multiply
   1,375.72x = 1,897.83 × 903.43
4. Step 4: Simplify right side
   1,375.72x = 1,714,556.56
5. Step 5: Solve for x
   x = 1,714,556.56/1,375.72
6. Step 6: Final answer
   x = 1,246.30