Finding the Fourth Proportional to 2,371.31, 3,557.57 and 910.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,371.31 : 3,557.57 = 910.57 : x
2. Step 2: Convert to fraction form
   2,371.31/3,557.57 = 910.57/x
3. Step 3: Cross multiply
   2,371.31x = 3,557.57 × 910.57
4. Step 4: Simplify right side
   2,371.31x = 3,239,416.51
5. Step 5: Solve for x
   x = 3,239,416.51/2,371.31
6. Step 6: Final answer
   x = 1,366.09