Finding the Fourth Proportional to 3,529.56, 4,870.89 and 2,131.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,529.56 : 4,870.89 = 2,131.50 : x
2. Step 2: Convert to fraction form
   3,529.56/4,870.89 = 2,131.50/x
3. Step 3: Cross multiply
   3,529.56x = 4,870.89 × 2,131.50
4. Step 4: Simplify right side
   3,529.56x = 10,382,302.04
5. Step 5: Solve for x
   x = 10,382,302.04/3,529.56
6. Step 6: Final answer
   x = 2,941.53