Finding the Fourth Proportional to 1,069.56, 1,606.10 and 897.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,069.56 : 1,606.10 = 897.50 : x
2. Step 2: Convert to fraction form
   1,069.56/1,606.10 = 897.50/x
3. Step 3: Cross multiply
   1,069.56x = 1,606.10 × 897.50
4. Step 4: Simplify right side
   1,069.56x = 1,441,474.28
5. Step 5: Solve for x
   x = 1,441,474.28/1,069.56
6. Step 6: Final answer
   x = 1,347.73