Finding the Fourth Proportional to 1,375.97, 1,898.18 and 903.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,375.97 : 1,898.18 = 903.68 : x
2. Step 2: Convert to fraction form
   1,375.97/1,898.18 = 903.68/x
3. Step 3: Cross multiply
   1,375.97x = 1,898.18 × 903.68
4. Step 4: Simplify right side
   1,375.97x = 1,715,337.81
5. Step 5: Solve for x
   x = 1,715,337.81/1,375.97
6. Step 6: Final answer
   x = 1,246.64