Finding the Fourth Proportional to 1,357.34, 1,874.88 and 1,003.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,357.34 : 1,874.88 = 1,003.97 : x
2. Step 2: Convert to fraction form
   1,357.34/1,874.88 = 1,003.97/x
3. Step 3: Cross multiply
   1,357.34x = 1,874.88 × 1,003.97
4. Step 4: Simplify right side
   1,357.34x = 1,882,327.96
5. Step 5: Solve for x
   x = 1,882,327.96/1,357.34
6. Step 6: Final answer
   x = 1,386.78