Finding the Fourth Proportional to 2,198.50, 3,298.42 and 900.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,198.50 : 3,298.42 = 900.07 : x
2. Step 2: Convert to fraction form
   2,198.50/3,298.42 = 900.07/x
3. Step 3: Cross multiply
   2,198.50x = 3,298.42 × 900.07
4. Step 4: Simplify right side
   2,198.50x = 2,968,790.15
5. Step 5: Solve for x
   x = 2,968,790.15/2,198.50
6. Step 6: Final answer
   x = 1,350.37