Finding the Fourth Proportional to 2,386.42, 3,293.16 and 1,392.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,386.42 : 3,293.16 = 1,392.01 : x
2. Step 2: Convert to fraction form
   2,386.42/3,293.16 = 1,392.01/x
3. Step 3: Cross multiply
   2,386.42x = 3,293.16 × 1,392.01
4. Step 4: Simplify right side
   2,386.42x = 4,584,111.65
5. Step 5: Solve for x
   x = 4,584,111.65/2,386.42
6. Step 6: Final answer
   x = 1,920.92