Finding the Fourth Proportional to 1,072.74, 1,601.42 and 1,025.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,072.74 : 1,601.42 = 1,025.46 : x
2. Step 2: Convert to fraction form
   1,072.74/1,601.42 = 1,025.46/x
3. Step 3: Cross multiply
   1,072.74x = 1,601.42 × 1,025.46
4. Step 4: Simplify right side
   1,072.74x = 1,642,187.03
5. Step 5: Solve for x
   x = 1,642,187.03/1,072.74
6. Step 6: Final answer
   x = 1,530.83