Finding the Fourth Proportional to 1,442.10, 1,991.25 and 1,001.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,442.10 : 1,991.25 = 1,001.46 : x
2. Step 2: Convert to fraction form
   1,442.10/1,991.25 = 1,001.46/x
3. Step 3: Cross multiply
   1,442.10x = 1,991.25 × 1,001.46
4. Step 4: Simplify right side
   1,442.10x = 1,994,157.23
5. Step 5: Solve for x
   x = 1,994,157.23/1,442.10
6. Step 6: Final answer
   x = 1,382.81