Finding the Fourth Proportional to 1,061.37, 1,589.22 and 906.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.37 : 1,589.22 = 906.39 : x
2. Step 2: Convert to fraction form
   1,061.37/1,589.22 = 906.39/x
3. Step 3: Cross multiply
   1,061.37x = 1,589.22 × 906.39
4. Step 4: Simplify right side
   1,061.37x = 1,440,453.12
5. Step 5: Solve for x
   x = 1,440,453.12/1,061.37
6. Step 6: Final answer
   x = 1,357.16