Finding the Fourth Proportional to 2,131.91, 2,941.82 and 1,572.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.91 : 2,941.82 = 1,572.68 : x
2. Step 2: Convert to fraction form
   2,131.91/2,941.82 = 1,572.68/x
3. Step 3: Cross multiply
   2,131.91x = 2,941.82 × 1,572.68
4. Step 4: Simplify right side
   2,131.91x = 4,626,541.48
5. Step 5: Solve for x
   x = 4,626,541.48/2,131.91
6. Step 6: Final answer
   x = 2,170.14