Finding the Fourth Proportional to 1,445.58, 1,992.86 and 1,025.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.58 : 1,992.86 = 1,025.78 : x
2. Step 2: Convert to fraction form
   1,445.58/1,992.86 = 1,025.78/x
3. Step 3: Cross multiply
   1,445.58x = 1,992.86 × 1,025.78
4. Step 4: Simplify right side
   1,445.58x = 2,044,242.44
5. Step 5: Solve for x
   x = 2,044,242.44/1,445.58
6. Step 6: Final answer
   x = 1,414.13