Finding the Fourth Proportional to 2,542.51, 3,813.89 and 899.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,542.51 : 3,813.89 = 899.23 : x
2. Step 2: Convert to fraction form
   2,542.51/3,813.89 = 899.23/x
3. Step 3: Cross multiply
   2,542.51x = 3,813.89 × 899.23
4. Step 4: Simplify right side
   2,542.51x = 3,429,564.30
5. Step 5: Solve for x
   x = 3,429,564.30/2,542.51
6. Step 6: Final answer
   x = 1,348.89