Finding the Fourth Proportional to 1,350.71, 1,864.49 and 909.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,350.71 : 1,864.49 = 909.87 : x
2. Step 2: Convert to fraction form
   1,350.71/1,864.49 = 909.87/x
3. Step 3: Cross multiply
   1,350.71x = 1,864.49 × 909.87
4. Step 4: Simplify right side
   1,350.71x = 1,696,443.52
5. Step 5: Solve for x
   x = 1,696,443.52/1,350.71
6. Step 6: Final answer
   x = 1,255.96