Finding the Fourth Proportional to 2,755.56, 4,131.96 and 906.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,755.56 : 4,131.96 = 906.46 : x
2. Step 2: Convert to fraction form
   2,755.56/4,131.96 = 906.46/x
3. Step 3: Cross multiply
   2,755.56x = 4,131.96 × 906.46
4. Step 4: Simplify right side
   2,755.56x = 3,745,456.46
5. Step 5: Solve for x
   x = 3,745,456.46/2,755.56
6. Step 6: Final answer
   x = 1,359.24