Finding the Fourth Proportional to 2,654.12, 3,981.81 and 899.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,654.12 : 3,981.81 = 899.09 : x
2. Step 2: Convert to fraction form
   2,654.12/3,981.81 = 899.09/x
3. Step 3: Cross multiply
   2,654.12x = 3,981.81 × 899.09
4. Step 4: Simplify right side
   2,654.12x = 3,580,005.55
5. Step 5: Solve for x
   x = 3,580,005.55/2,654.12
6. Step 6: Final answer
   x = 1,348.85