Finding the Fourth Proportional to 1,357.83, 1,872.52 and 910.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,357.83 : 1,872.52 = 910.71 : x
2. Step 2: Convert to fraction form
   1,357.83/1,872.52 = 910.71/x
3. Step 3: Cross multiply
   1,357.83x = 1,872.52 × 910.71
4. Step 4: Simplify right side
   1,357.83x = 1,705,320.41
5. Step 5: Solve for x
   x = 1,705,320.41/1,357.83
6. Step 6: Final answer
   x = 1,255.92