Finding the Fourth Proportional to 2,082.53, 3,124.34 and 621.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,082.53 : 3,124.34 = 621.69 : x
2. Step 2: Convert to fraction form
   2,082.53/3,124.34 = 621.69/x
3. Step 3: Cross multiply
   2,082.53x = 3,124.34 × 621.69
4. Step 4: Simplify right side
   2,082.53x = 1,942,372.49
5. Step 5: Solve for x
   x = 1,942,372.49/2,082.53
6. Step 6: Final answer
   x = 932.70