Finding the Fourth Proportional to 2,326.40, 3,486.72 and 1,399.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,326.40 : 3,486.72 = 1,399.04 : x
2. Step 2: Convert to fraction form
   2,326.40/3,486.72 = 1,399.04/x
3. Step 3: Cross multiply
   2,326.40x = 3,486.72 × 1,399.04
4. Step 4: Simplify right side
   2,326.40x = 4,878,060.75
5. Step 5: Solve for x
   x = 4,878,060.75/2,326.40
6. Step 6: Final answer
   x = 2,096.83