Finding the Fourth Proportional to 2,238.90, 3,357.81 and 940.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,238.90 : 3,357.81 = 940.02 : x
2. Step 2: Convert to fraction form
   2,238.90/3,357.81 = 940.02/x
3. Step 3: Cross multiply
   2,238.90x = 3,357.81 × 940.02
4. Step 4: Simplify right side
   2,238.90x = 3,156,408.56
5. Step 5: Solve for x
   x = 3,156,408.56/2,238.90
6. Step 6: Final answer
   x = 1,409.80