Finding the Fourth Proportional to 2,318.47, 3,199.72 and 1,323.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,318.47 : 3,199.72 = 1,323.90 : x
2. Step 2: Convert to fraction form
   2,318.47/3,199.72 = 1,323.90/x
3. Step 3: Cross multiply
   2,318.47x = 3,199.72 × 1,323.90
4. Step 4: Simplify right side
   2,318.47x = 4,236,109.31
5. Step 5: Solve for x
   x = 4,236,109.31/2,318.47
6. Step 6: Final answer
   x = 1,827.11