Finding the Fourth Proportional to 3,131.18, 4,697.31 and 940.04

Step by Step Solution

1. Step 1: Write the proportion equation
   3,131.18 : 4,697.31 = 940.04 : x
2. Step 2: Convert to fraction form
   3,131.18/4,697.31 = 940.04/x
3. Step 3: Cross multiply
   3,131.18x = 4,697.31 × 940.04
4. Step 4: Simplify right side
   3,131.18x = 4,415,659.29
5. Step 5: Solve for x
   x = 4,415,659.29/3,131.18
6. Step 6: Final answer
   x = 1,410.22