Finding the Fourth Proportional to 2,077.05, 3,114.28 and 690.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,077.05 : 3,114.28 = 690.03 : x
2. Step 2: Convert to fraction form
   2,077.05/3,114.28 = 690.03/x
3. Step 3: Cross multiply
   2,077.05x = 3,114.28 × 690.03
4. Step 4: Simplify right side
   2,077.05x = 2,148,938.73
5. Step 5: Solve for x
   x = 2,148,938.73/2,077.05
6. Step 6: Final answer
   x = 1,034.61