Finding the Fourth Proportional to 1,384.48, 2,072.56 and 897.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,384.48 : 2,072.56 = 897.76 : x
2. Step 2: Convert to fraction form
   1,384.48/2,072.56 = 897.76/x
3. Step 3: Cross multiply
   1,384.48x = 2,072.56 × 897.76
4. Step 4: Simplify right side
   1,384.48x = 1,860,661.47
5. Step 5: Solve for x
   x = 1,860,661.47/1,384.48
6. Step 6: Final answer
   x = 1,343.94