Finding the Fourth Proportional to 1,689.22, 2,317.79 and 1,596.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,689.22 : 2,317.79 = 1,596.34 : x
2. Step 2: Convert to fraction form
   1,689.22/2,317.79 = 1,596.34/x
3. Step 3: Cross multiply
   1,689.22x = 2,317.79 × 1,596.34
4. Step 4: Simplify right side
   1,689.22x = 3,699,980.89
5. Step 5: Solve for x
   x = 3,699,980.89/1,689.22
6. Step 6: Final answer
   x = 2,190.35