Finding the Fourth Proportional to 2,082.06, 3,123.15 and 927.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,082.06 : 3,123.15 = 927.90 : x
2. Step 2: Convert to fraction form
   2,082.06/3,123.15 = 927.90/x
3. Step 3: Cross multiply
   2,082.06x = 3,123.15 × 927.90
4. Step 4: Simplify right side
   2,082.06x = 2,897,970.89
5. Step 5: Solve for x
   x = 2,897,970.89/2,082.06
6. Step 6: Final answer
   x = 1,391.88