Finding the Fourth Proportional to 2,772.63, 4,159.15 and 1,212.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,772.63 : 4,159.15 = 1,212.72 : x
2. Step 2: Convert to fraction form
   2,772.63/4,159.15 = 1,212.72/x
3. Step 3: Cross multiply
   2,772.63x = 4,159.15 × 1,212.72
4. Step 4: Simplify right side
   2,772.63x = 5,043,889.15
5. Step 5: Solve for x
   x = 5,043,889.15/2,772.63
6. Step 6: Final answer
   x = 1,819.17