Finding the Fourth Proportional to 1,375.74, 1,900.17 and 1,002.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,375.74 : 1,900.17 = 1,002.12 : x
2. Step 2: Convert to fraction form
   1,375.74/1,900.17 = 1,002.12/x
3. Step 3: Cross multiply
   1,375.74x = 1,900.17 × 1,002.12
4. Step 4: Simplify right side
   1,375.74x = 1,904,198.36
5. Step 5: Solve for x
   x = 1,904,198.36/1,375.74
6. Step 6: Final answer
   x = 1,384.13