Finding the Fourth Proportional to 2,131.99, 2,941.46 and 1,200.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.99 : 2,941.46 = 1,200.31 : x
2. Step 2: Convert to fraction form
   2,131.99/2,941.46 = 1,200.31/x
3. Step 3: Cross multiply
   2,131.99x = 2,941.46 × 1,200.31
4. Step 4: Simplify right side
   2,131.99x = 3,530,663.85
5. Step 5: Solve for x
   x = 3,530,663.85/2,131.99
6. Step 6: Final answer
   x = 1,656.04