Finding the Fourth Proportional to 1,344.98, 1,855.97 and 902.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,344.98 : 1,855.97 = 902.81 : x
2. Step 2: Convert to fraction form
   1,344.98/1,855.97 = 902.81/x
3. Step 3: Cross multiply
   1,344.98x = 1,855.97 × 902.81
4. Step 4: Simplify right side
   1,344.98x = 1,675,581.25
5. Step 5: Solve for x
   x = 1,675,581.25/1,344.98
6. Step 6: Final answer
   x = 1,245.81