Finding the Fourth Proportional to 1,685.01, 2,321.79 and 1,568.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,685.01 : 2,321.79 = 1,568.22 : x
2. Step 2: Convert to fraction form
   1,685.01/2,321.79 = 1,568.22/x
3. Step 3: Cross multiply
   1,685.01x = 2,321.79 × 1,568.22
4. Step 4: Simplify right side
   1,685.01x = 3,641,077.51
5. Step 5: Solve for x
   x = 3,641,077.51/1,685.01
6. Step 6: Final answer
   x = 2,160.86