Finding the Fourth Proportional to 2,079.55, 3,119.83 and 692.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,079.55 : 3,119.83 = 692.88 : x
2. Step 2: Convert to fraction form
   2,079.55/3,119.83 = 692.88/x
3. Step 3: Cross multiply
   2,079.55x = 3,119.83 × 692.88
4. Step 4: Simplify right side
   2,079.55x = 2,161,667.81
5. Step 5: Solve for x
   x = 2,161,667.81/2,079.55
6. Step 6: Final answer
   x = 1,039.49