Finding the Fourth Proportional to 2,015.42, 3,026.74 and 1,323.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,015.42 : 3,026.74 = 1,323.50 : x
2. Step 2: Convert to fraction form
   2,015.42/3,026.74 = 1,323.50/x
3. Step 3: Cross multiply
   2,015.42x = 3,026.74 × 1,323.50
4. Step 4: Simplify right side
   2,015.42x = 4,005,890.39
5. Step 5: Solve for x
   x = 4,005,890.39/2,015.42
6. Step 6: Final answer
   x = 1,987.62