Finding the Fourth Proportional to 2,199.39, 3,296.27 and 899.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,199.39 : 3,296.27 = 899.31 : x
2. Step 2: Convert to fraction form
   2,199.39/3,296.27 = 899.31/x
3. Step 3: Cross multiply
   2,199.39x = 3,296.27 × 899.31
4. Step 4: Simplify right side
   2,199.39x = 2,964,379.81
5. Step 5: Solve for x
   x = 2,964,379.81/2,199.39
6. Step 6: Final answer
   x = 1,347.82