Finding the Fourth Proportional to 3,131.72, 4,697.07 and 940.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,131.72 : 4,697.07 = 940.06 : x
2. Step 2: Convert to fraction form
   3,131.72/4,697.07 = 940.06/x
3. Step 3: Cross multiply
   3,131.72x = 4,697.07 × 940.06
4. Step 4: Simplify right side
   3,131.72x = 4,415,533.50
5. Step 5: Solve for x
   x = 4,415,533.50/3,131.72
6. Step 6: Final answer
   x = 1,409.94