Finding the Fourth Proportional to 2,131.62, 2,941.51 and 1,235.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.62 : 2,941.51 = 1,235.20 : x
2. Step 2: Convert to fraction form
   2,131.62/2,941.51 = 1,235.20/x
3. Step 3: Cross multiply
   2,131.62x = 2,941.51 × 1,235.20
4. Step 4: Simplify right side
   2,131.62x = 3,633,353.15
5. Step 5: Solve for x
   x = 3,633,353.15/2,131.62
6. Step 6: Final answer
   x = 1,704.50