Finding the Fourth Proportional to 2,131.55, 3,197.61 and 1,035.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.55 : 3,197.61 = 1,035.77 : x
2. Step 2: Convert to fraction form
   2,131.55/3,197.61 = 1,035.77/x
3. Step 3: Cross multiply
   2,131.55x = 3,197.61 × 1,035.77
4. Step 4: Simplify right side
   2,131.55x = 3,311,972.52
5. Step 5: Solve for x
   x = 3,311,972.52/2,131.55
6. Step 6: Final answer
   x = 1,553.79