Finding the Fourth Proportional to 1,406.20, 1,940.04 and 1,074.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,406.20 : 1,940.04 = 1,074.10 : x
2. Step 2: Convert to fraction form
   1,406.20/1,940.04 = 1,074.10/x
3. Step 3: Cross multiply
   1,406.20x = 1,940.04 × 1,074.10
4. Step 4: Simplify right side
   1,406.20x = 2,083,796.96
5. Step 5: Solve for x
   x = 2,083,796.96/1,406.20
6. Step 6: Final answer
   x = 1,481.86