Finding the Fourth Proportional to 1,397.14, 1,925.40 and 1,003.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,397.14 : 1,925.40 = 1,003.48 : x
2. Step 2: Convert to fraction form
   1,397.14/1,925.40 = 1,003.48/x
3. Step 3: Cross multiply
   1,397.14x = 1,925.40 × 1,003.48
4. Step 4: Simplify right side
   1,397.14x = 1,932,100.39
5. Step 5: Solve for x
   x = 1,932,100.39/1,397.14
6. Step 6: Final answer
   x = 1,382.90