Finding the Fourth Proportional to 2,773.88, 4,160.72 and 1,107.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,773.88 : 4,160.72 = 1,107.17 : x
2. Step 2: Convert to fraction form
   2,773.88/4,160.72 = 1,107.17/x
3. Step 3: Cross multiply
   2,773.88x = 4,160.72 × 1,107.17
4. Step 4: Simplify right side
   2,773.88x = 4,606,624.46
5. Step 5: Solve for x
   x = 4,606,624.46/2,773.88
6. Step 6: Final answer
   x = 1,660.71