Finding the Fourth Proportional to 2,238.60, 3,359.10 and 940.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,238.60 : 3,359.10 = 940.20 : x
2. Step 2: Convert to fraction form
   2,238.60/3,359.10 = 940.20/x
3. Step 3: Cross multiply
   2,238.60x = 3,359.10 × 940.20
4. Step 4: Simplify right side
   2,238.60x = 3,158,225.82
5. Step 5: Solve for x
   x = 3,158,225.82/2,238.60
6. Step 6: Final answer
   x = 1,410.80