Finding the Fourth Proportional to 1,395.45, 1,924.80 and 897.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,395.45 : 1,924.80 = 897.30 : x
2. Step 2: Convert to fraction form
   1,395.45/1,924.80 = 897.30/x
3. Step 3: Cross multiply
   1,395.45x = 1,924.80 × 897.30
4. Step 4: Simplify right side
   1,395.45x = 1,727,123.04
5. Step 5: Solve for x
   x = 1,727,123.04/1,395.45
6. Step 6: Final answer
   x = 1,237.68