Finding the Fourth Proportional to 2,069.98, 3,103.22 and 899.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,069.98 : 3,103.22 = 899.10 : x
2. Step 2: Convert to fraction form
   2,069.98/3,103.22 = 899.10/x
3. Step 3: Cross multiply
   2,069.98x = 3,103.22 × 899.10
4. Step 4: Simplify right side
   2,069.98x = 2,790,085.09
5. Step 5: Solve for x
   x = 2,790,085.09/2,069.98
6. Step 6: Final answer
   x = 1,347.88