Finding the Fourth Proportional to 2,078.76, 3,118.08 and 692.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,078.76 : 3,118.08 = 692.10 : x
2. Step 2: Convert to fraction form
   2,078.76/3,118.08 = 692.10/x
3. Step 3: Cross multiply
   2,078.76x = 3,118.08 × 692.10
4. Step 4: Simplify right side
   2,078.76x = 2,158,023.17
5. Step 5: Solve for x
   x = 2,158,023.17/2,078.76
6. Step 6: Final answer
   x = 1,038.13