Finding the Fourth Proportional to 3,529.50, 4,870.71 and 2,131.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3,529.50 : 4,870.71 = 2,131.98 : x
2. Step 2: Convert to fraction form
   3,529.50/4,870.71 = 2,131.98/x
3. Step 3: Cross multiply
   3,529.50x = 4,870.71 × 2,131.98
4. Step 4: Simplify right side
   3,529.50x = 10,384,256.31
5. Step 5: Solve for x
   x = 10,384,256.31/3,529.50
6. Step 6: Final answer
   x = 2,942.13