Finding the Fourth Proportional to 1,375.56, 1,898.82 and 910.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,375.56 : 1,898.82 = 910.92 : x
2. Step 2: Convert to fraction form
   1,375.56/1,898.82 = 910.92/x
3. Step 3: Cross multiply
   1,375.56x = 1,898.82 × 910.92
4. Step 4: Simplify right side
   1,375.56x = 1,729,673.11
5. Step 5: Solve for x
   x = 1,729,673.11/1,375.56
6. Step 6: Final answer
   x = 1,257.43