Finding the Fourth Proportional to 2,131.53, 2,941.52 and 1,247.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.53 : 2,941.52 = 1,247.16 : x
2. Step 2: Convert to fraction form
   2,131.53/2,941.52 = 1,247.16/x
3. Step 3: Cross multiply
   2,131.53x = 2,941.52 × 1,247.16
4. Step 4: Simplify right side
   2,131.53x = 3,668,550.88
5. Step 5: Solve for x
   x = 3,668,550.88/2,131.53
6. Step 6: Final answer
   x = 1,721.09