Finding the Fourth Proportional to 2,755.82, 4,134.79 and 907.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,755.82 : 4,134.79 = 907.20 : x
2. Step 2: Convert to fraction form
   2,755.82/4,134.79 = 907.20/x
3. Step 3: Cross multiply
   2,755.82x = 4,134.79 × 907.20
4. Step 4: Simplify right side
   2,755.82x = 3,751,060.81
5. Step 5: Solve for x
   x = 3,751,060.81/2,755.82
6. Step 6: Final answer
   x = 1,361.14