Finding the Fourth Proportional to 3,807.55, 5,706.78 and 1,959.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,807.55 : 5,706.78 = 1,959.55 : x
2. Step 2: Convert to fraction form
   3,807.55/5,706.78 = 1,959.55/x
3. Step 3: Cross multiply
   3,807.55x = 5,706.78 × 1,959.55
4. Step 4: Simplify right side
   3,807.55x = 11,182,720.75
5. Step 5: Solve for x
   x = 11,182,720.75/3,807.55
6. Step 6: Final answer
   x = 2,936.99