Finding the Fourth Proportional to 1,568.47, 2,164.33 and 938.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,568.47 : 2,164.33 = 938.87 : x
2. Step 2: Convert to fraction form
   1,568.47/2,164.33 = 938.87/x
3. Step 3: Cross multiply
   1,568.47x = 2,164.33 × 938.87
4. Step 4: Simplify right side
   1,568.47x = 2,032,024.51
5. Step 5: Solve for x
   x = 2,032,024.51/1,568.47
6. Step 6: Final answer
   x = 1,295.55