Finding the Fourth Proportional to 2,079.42, 3,118.79 and 692.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,079.42 : 3,118.79 = 692.43 : x
2. Step 2: Convert to fraction form
   2,079.42/3,118.79 = 692.43/x
3. Step 3: Cross multiply
   2,079.42x = 3,118.79 × 692.43
4. Step 4: Simplify right side
   2,079.42x = 2,159,540.30
5. Step 5: Solve for x
   x = 2,159,540.30/2,079.42
6. Step 6: Final answer
   x = 1,038.53