Finding the Fourth Proportional to 2,300.31, 3,174.24 and 1,392.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,300.31 : 3,174.24 = 1,392.17 : x
2. Step 2: Convert to fraction form
   2,300.31/3,174.24 = 1,392.17/x
3. Step 3: Cross multiply
   2,300.31x = 3,174.24 × 1,392.17
4. Step 4: Simplify right side
   2,300.31x = 4,419,063.22
5. Step 5: Solve for x
   x = 4,419,063.22/2,300.31
6. Step 6: Final answer
   x = 1,921.07