Finding the Fourth Proportional to 2,076.84, 3,114.94 and 690.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,076.84 : 3,114.94 = 690.20 : x
2. Step 2: Convert to fraction form
   2,076.84/3,114.94 = 690.20/x
3. Step 3: Cross multiply
   2,076.84x = 3,114.94 × 690.20
4. Step 4: Simplify right side
   2,076.84x = 2,149,931.59
5. Step 5: Solve for x
   x = 2,149,931.59/2,076.84
6. Step 6: Final answer
   x = 1,035.19