Finding the Fourth Proportional to 1,574.32, 2,361.72 and 923.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,574.32 : 2,361.72 = 923.92 : x
2. Step 2: Convert to fraction form
   1,574.32/2,361.72 = 923.92/x
3. Step 3: Cross multiply
   1,574.32x = 2,361.72 × 923.92
4. Step 4: Simplify right side
   1,574.32x = 2,182,040.34
5. Step 5: Solve for x
   x = 2,182,040.34/1,574.32
6. Step 6: Final answer
   x = 1,386.02