Finding the Fourth Proportional to 2,074.78, 2,860.67 and 1,445.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,074.78 : 2,860.67 = 1,445.86 : x
2. Step 2: Convert to fraction form
   2,074.78/2,860.67 = 1,445.86/x
3. Step 3: Cross multiply
   2,074.78x = 2,860.67 × 1,445.86
4. Step 4: Simplify right side
   2,074.78x = 4,136,128.33
5. Step 5: Solve for x
   x = 4,136,128.33/2,074.78
6. Step 6: Final answer
   x = 1,993.53