Finding the Fourth Proportional to 3,131.81, 4,700.09 and 1,159.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,131.81 : 4,700.09 = 1,159.30 : x
2. Step 2: Convert to fraction form
   3,131.81/4,700.09 = 1,159.30/x
3. Step 3: Cross multiply
   3,131.81x = 4,700.09 × 1,159.30
4. Step 4: Simplify right side
   3,131.81x = 5,448,814.34
5. Step 5: Solve for x
   x = 5,448,814.34/3,131.81
6. Step 6: Final answer
   x = 1,739.83