Finding the Fourth Proportional to 1,513.64, 2,272.68 and 1,323.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,513.64 : 2,272.68 = 1,323.56 : x
2. Step 2: Convert to fraction form
   1,513.64/2,272.68 = 1,323.56/x
3. Step 3: Cross multiply
   1,513.64x = 2,272.68 × 1,323.56
4. Step 4: Simplify right side
   1,513.64x = 3,008,028.34
5. Step 5: Solve for x
   x = 3,008,028.34/1,513.64
6. Step 6: Final answer
   x = 1,987.28