Finding the Fourth Proportional to 2,011.50, 3,013.92 and 1,317.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,011.50 : 3,013.92 = 1,317.24 : x
2. Step 2: Convert to fraction form
   2,011.50/3,013.92 = 1,317.24/x
3. Step 3: Cross multiply
   2,011.50x = 3,013.92 × 1,317.24
4. Step 4: Simplify right side
   2,011.50x = 3,970,055.98
5. Step 5: Solve for x
   x = 3,970,055.98/2,011.50
6. Step 6: Final answer
   x = 1,973.68