Finding the Fourth Proportional to 2,082.50, 3,124.06 and 621.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,082.50 : 3,124.06 = 621.47 : x
2. Step 2: Convert to fraction form
   2,082.50/3,124.06 = 621.47/x
3. Step 3: Cross multiply
   2,082.50x = 3,124.06 × 621.47
4. Step 4: Simplify right side
   2,082.50x = 1,941,492.39
5. Step 5: Solve for x
   x = 1,941,492.39/2,082.50
6. Step 6: Final answer
   x = 932.29