Finding the Fourth Proportional to 2,231.30, 3,081.56 and 1,692.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,231.30 : 3,081.56 = 1,692.06 : x
2. Step 2: Convert to fraction form
   2,231.30/3,081.56 = 1,692.06/x
3. Step 3: Cross multiply
   2,231.30x = 3,081.56 × 1,692.06
4. Step 4: Simplify right side
   2,231.30x = 5,214,175.95
5. Step 5: Solve for x
   x = 5,214,175.95/2,231.30
6. Step 6: Final answer
   x = 2,336.84