Finding the Fourth Proportional to 2,979.79, 4,470.09 and 1,131.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,979.79 : 4,470.09 = 1,131.59 : x
2. Step 2: Convert to fraction form
   2,979.79/4,470.09 = 1,131.59/x
3. Step 3: Cross multiply
   2,979.79x = 4,470.09 × 1,131.59
4. Step 4: Simplify right side
   2,979.79x = 5,058,309.14
5. Step 5: Solve for x
   x = 5,058,309.14/2,979.79
6. Step 6: Final answer
   x = 1,697.54