Finding the Fourth Proportional to 1,679.40, 2,316.18 and 1,567.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,679.40 : 2,316.18 = 1,567.62 : x
2. Step 2: Convert to fraction form
   1,679.40/2,316.18 = 1,567.62/x
3. Step 3: Cross multiply
   1,679.40x = 2,316.18 × 1,567.62
4. Step 4: Simplify right side
   1,679.40x = 3,630,890.09
5. Step 5: Solve for x
   x = 3,630,890.09/1,679.40
6. Step 6: Final answer
   x = 2,162.02