Finding the Fourth Proportional to 3,321.24, 4,981.82 and 1,131.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,321.24 : 4,981.82 = 1,131.50 : x
2. Step 2: Convert to fraction form
   3,321.24/4,981.82 = 1,131.50/x
3. Step 3: Cross multiply
   3,321.24x = 4,981.82 × 1,131.50
4. Step 4: Simplify right side
   3,321.24x = 5,636,898.76
5. Step 5: Solve for x
   x = 5,636,898.76/3,321.24
6. Step 6: Final answer
   x = 1,697.23