Finding the Fourth Proportional to 1,605.42, 2,213.22 and 1,074.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,605.42 : 2,213.22 = 1,074.30 : x
2. Step 2: Convert to fraction form
   1,605.42/2,213.22 = 1,074.30/x
3. Step 3: Cross multiply
   1,605.42x = 2,213.22 × 1,074.30
4. Step 4: Simplify right side
   1,605.42x = 2,377,662.25
5. Step 5: Solve for x
   x = 2,377,662.25/1,605.42
6. Step 6: Final answer
   x = 1,481.02