Finding the Fourth Proportional to 897.31, 1,238.27 and 548.00

Step by Step Solution

1. Step 1: Write the proportion equation
   897.31 : 1,238.27 = 548.00 : x
2. Step 2: Convert to fraction form
   897.31/1,238.27 = 548.00/x
3. Step 3: Cross multiply
   897.31x = 1,238.27 × 548.00
4. Step 4: Simplify right side
   897.31x = 678,567.14
5. Step 5: Solve for x
   x = 678,567.14/897.31
6. Step 6: Final answer
   x = 756.23