Finding the Fourth Proportional to 2,069.10, 3,100.05 and 1,338.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,069.10 : 3,100.05 = 1,338.30 : x
2. Step 2: Convert to fraction form
   2,069.10/3,100.05 = 1,338.30/x
3. Step 3: Cross multiply
   2,069.10x = 3,100.05 × 1,338.30
4. Step 4: Simplify right side
   2,069.10x = 4,148,796.92
5. Step 5: Solve for x
   x = 4,148,796.92/2,069.10
6. Step 6: Final answer
   x = 2,005.12