Finding the Fourth Proportional to 3,086.54, 4,259.20 and 1,907.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,086.54 : 4,259.20 = 1,907.18 : x
2. Step 2: Convert to fraction form
   3,086.54/4,259.20 = 1,907.18/x
3. Step 3: Cross multiply
   3,086.54x = 4,259.20 × 1,907.18
4. Step 4: Simplify right side
   3,086.54x = 8,123,061.06
5. Step 5: Solve for x
   x = 8,123,061.06/3,086.54
6. Step 6: Final answer
   x = 2,631.77