Finding the Fourth Proportional to 1,608.34, 2,412.16 and 940.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,608.34 : 2,412.16 = 940.78 : x
2. Step 2: Convert to fraction form
   1,608.34/2,412.16 = 940.78/x
3. Step 3: Cross multiply
   1,608.34x = 2,412.16 × 940.78
4. Step 4: Simplify right side
   1,608.34x = 2,269,311.88
5. Step 5: Solve for x
   x = 2,269,311.88/1,608.34
6. Step 6: Final answer
   x = 1,410.97