Finding the Fourth Proportional to 1,846.72, 2,770.89 and 872.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,846.72 : 2,770.89 = 872.56 : x
2. Step 2: Convert to fraction form
   1,846.72/2,770.89 = 872.56/x
3. Step 3: Cross multiply
   1,846.72x = 2,770.89 × 872.56
4. Step 4: Simplify right side
   1,846.72x = 2,417,767.78
5. Step 5: Solve for x
   x = 2,417,767.78/1,846.72
6. Step 6: Final answer
   x = 1,309.22