Finding the Fourth Proportional to 3,513.20, 5,270.52 and 2,051.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,513.20 : 5,270.52 = 2,051.60 : x
2. Step 2: Convert to fraction form
   3,513.20/5,270.52 = 2,051.60/x
3. Step 3: Cross multiply
   3,513.20x = 5,270.52 × 2,051.60
4. Step 4: Simplify right side
   3,513.20x = 10,812,998.83
5. Step 5: Solve for x
   x = 10,812,998.83/3,513.20
6. Step 6: Final answer
   x = 3,077.82