Finding the Fourth Proportional to 1,456.95, 2,010.78 and 897.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,456.95 : 2,010.78 = 897.78 : x
2. Step 2: Convert to fraction form
   1,456.95/2,010.78 = 897.78/x
3. Step 3: Cross multiply
   1,456.95x = 2,010.78 × 897.78
4. Step 4: Simplify right side
   1,456.95x = 1,805,238.07
5. Step 5: Solve for x
   x = 1,805,238.07/1,456.95
6. Step 6: Final answer
   x = 1,239.05