Finding the Fourth Proportional to 2,780.72, 4,172.31 and 1,464.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,780.72 : 4,172.31 = 1,464.15 : x
2. Step 2: Convert to fraction form
   2,780.72/4,172.31 = 1,464.15/x
3. Step 3: Cross multiply
   2,780.72x = 4,172.31 × 1,464.15
4. Step 4: Simplify right side
   2,780.72x = 6,108,887.69
5. Step 5: Solve for x
   x = 6,108,887.69/2,780.72
6. Step 6: Final answer
   x = 2,196.87