Finding the Fourth Proportional to 1,350.74, 1,863.68 and 907.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,350.74 : 1,863.68 = 907.88 : x
2. Step 2: Convert to fraction form
   1,350.74/1,863.68 = 907.88/x
3. Step 3: Cross multiply
   1,350.74x = 1,863.68 × 907.88
4. Step 4: Simplify right side
   1,350.74x = 1,691,983.94
5. Step 5: Solve for x
   x = 1,691,983.94/1,350.74
6. Step 6: Final answer
   x = 1,252.63