Finding the Fourth Proportional to 3,109.28, 4,290.69 and 1,692.94

Step by Step Solution

1. Step 1: Write the proportion equation
   3,109.28 : 4,290.69 = 1,692.94 : x
2. Step 2: Convert to fraction form
   3,109.28/4,290.69 = 1,692.94/x
3. Step 3: Cross multiply
   3,109.28x = 4,290.69 × 1,692.94
4. Step 4: Simplify right side
   3,109.28x = 7,263,870.00
5. Step 5: Solve for x
   x = 7,263,870.00/3,109.28
6. Step 6: Final answer
   x = 2,336.19