Finding the Fourth Proportional to 1,513.58, 2,257.42 and 1,329.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,513.58 : 2,257.42 = 1,329.69 : x
2. Step 2: Convert to fraction form
   1,513.58/2,257.42 = 1,329.69/x
3. Step 3: Cross multiply
   1,513.58x = 2,257.42 × 1,329.69
4. Step 4: Simplify right side
   1,513.58x = 3,001,665.48
5. Step 5: Solve for x
   x = 3,001,665.48/1,513.58
6. Step 6: Final answer
   x = 1,983.16