Finding the Fourth Proportional to 1,389.05, 2,081.75 and 567.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,389.05 : 2,081.75 = 567.94 : x
2. Step 2: Convert to fraction form
   1,389.05/2,081.75 = 567.94/x
3. Step 3: Cross multiply
   1,389.05x = 2,081.75 × 567.94
4. Step 4: Simplify right side
   1,389.05x = 1,182,298.69
5. Step 5: Solve for x
   x = 1,182,298.69/1,389.05
6. Step 6: Final answer
   x = 851.16