Finding the Fourth Proportional to 2,775.51, 4,162.59 and 1,215.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,775.51 : 4,162.59 = 1,215.45 : x
2. Step 2: Convert to fraction form
   2,775.51/4,162.59 = 1,215.45/x
3. Step 3: Cross multiply
   2,775.51x = 4,162.59 × 1,215.45
4. Step 4: Simplify right side
   2,775.51x = 5,059,420.02
5. Step 5: Solve for x
   x = 5,059,420.02/2,775.51
6. Step 6: Final answer
   x = 1,822.88