Finding the Fourth Proportional to 2,131.50, 2,941.49 and 1,247.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.50 : 2,941.49 = 1,247.13 : x
2. Step 2: Convert to fraction form
   2,131.50/2,941.49 = 1,247.13/x
3. Step 3: Cross multiply
   2,131.50x = 2,941.49 × 1,247.13
4. Step 4: Simplify right side
   2,131.50x = 3,668,420.42
5. Step 5: Solve for x
   x = 3,668,420.42/2,131.50
6. Step 6: Final answer
   x = 1,721.05