Finding the Fourth Proportional to 2,082.38, 3,123.59 and 621.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,082.38 : 3,123.59 = 621.53 : x
2. Step 2: Convert to fraction form
   2,082.38/3,123.59 = 621.53/x
3. Step 3: Cross multiply
   2,082.38x = 3,123.59 × 621.53
4. Step 4: Simplify right side
   2,082.38x = 1,941,405.76
5. Step 5: Solve for x
   x = 1,941,405.76/2,082.38
6. Step 6: Final answer
   x = 932.30