Finding the Fourth Proportional to 2,131.88, 2,941.02 and 1,247.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.88 : 2,941.02 = 1,247.29 : x
2. Step 2: Convert to fraction form
   2,131.88/2,941.02 = 1,247.29/x
3. Step 3: Cross multiply
   2,131.88x = 2,941.02 × 1,247.29
4. Step 4: Simplify right side
   2,131.88x = 3,668,297.48
5. Step 5: Solve for x
   x = 3,668,297.48/2,131.88
6. Step 6: Final answer
   x = 1,720.69