Finding the Fourth Proportional to 1,568.62, 2,164.50 and 939.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,568.62 : 2,164.50 = 939.01 : x
2. Step 2: Convert to fraction form
   1,568.62/2,164.50 = 939.01/x
3. Step 3: Cross multiply
   1,568.62x = 2,164.50 × 939.01
4. Step 4: Simplify right side
   1,568.62x = 2,032,487.15
5. Step 5: Solve for x
   x = 2,032,487.15/1,568.62
6. Step 6: Final answer
   x = 1,295.72