Finding the Fourth Proportional to 3,086.72, 4,259.36 and 1,827.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,086.72 : 4,259.36 = 1,827.60 : x
2. Step 2: Convert to fraction form
   3,086.72/4,259.36 = 1,827.60/x
3. Step 3: Cross multiply
   3,086.72x = 4,259.36 × 1,827.60
4. Step 4: Simplify right side
   3,086.72x = 7,784,406.34
5. Step 5: Solve for x
   x = 7,784,406.34/3,086.72
6. Step 6: Final answer
   x = 2,521.90