Finding the Fourth Proportional to 2,749.56, 4,121.69 and 899.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,749.56 : 4,121.69 = 899.39 : x
2. Step 2: Convert to fraction form
   2,749.56/4,121.69 = 899.39/x
3. Step 3: Cross multiply
   2,749.56x = 4,121.69 × 899.39
4. Step 4: Simplify right side
   2,749.56x = 3,706,981.66
5. Step 5: Solve for x
   x = 3,706,981.66/2,749.56
6. Step 6: Final answer
   x = 1,348.21