Finding the Fourth Proportional to 1,039.29, 1,561.37 and 893.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,039.29 : 1,561.37 = 893.49 : x
2. Step 2: Convert to fraction form
   1,039.29/1,561.37 = 893.49/x
3. Step 3: Cross multiply
   1,039.29x = 1,561.37 × 893.49
4. Step 4: Simplify right side
   1,039.29x = 1,395,064.01
5. Step 5: Solve for x
   x = 1,395,064.01/1,039.29
6. Step 6: Final answer
   x = 1,342.32