Finding the Fourth Proportional to 1,593.78, 2,389.86 and 1,074.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,593.78 : 2,389.86 = 1,074.57 : x
2. Step 2: Convert to fraction form
   1,593.78/2,389.86 = 1,074.57/x
3. Step 3: Cross multiply
   1,593.78x = 2,389.86 × 1,074.57
4. Step 4: Simplify right side
   1,593.78x = 2,568,071.86
5. Step 5: Solve for x
   x = 2,568,071.86/1,593.78
6. Step 6: Final answer
   x = 1,611.31