Finding the Fourth Proportional to 2,772.12, 3,825.59 and 1,513.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,772.12 : 3,825.59 = 1,513.20 : x
2. Step 2: Convert to fraction form
   2,772.12/3,825.59 = 1,513.20/x
3. Step 3: Cross multiply
   2,772.12x = 3,825.59 × 1,513.20
4. Step 4: Simplify right side
   2,772.12x = 5,788,875.22
5. Step 5: Solve for x
   x = 5,788,875.22/2,772.12
6. Step 6: Final answer
   x = 2,088.25