Finding the Fourth Proportional to 2,747.18, 3,789.05 and 1,907.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,747.18 : 3,789.05 = 1,907.89 : x
2. Step 2: Convert to fraction form
   2,747.18/3,789.05 = 1,907.89/x
3. Step 3: Cross multiply
   2,747.18x = 3,789.05 × 1,907.89
4. Step 4: Simplify right side
   2,747.18x = 7,229,071.59
5. Step 5: Solve for x
   x = 7,229,071.59/2,747.18
6. Step 6: Final answer
   x = 2,631.45