Finding the Fourth Proportional to 1,679.10, 2,314.86 and 1,636.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,679.10 : 2,314.86 = 1,636.98 : x
2. Step 2: Convert to fraction form
   1,679.10/2,314.86 = 1,636.98/x
3. Step 3: Cross multiply
   1,679.10x = 2,314.86 × 1,636.98
4. Step 4: Simplify right side
   1,679.10x = 3,789,379.52
5. Step 5: Solve for x
   x = 3,789,379.52/1,679.10
6. Step 6: Final answer
   x = 2,256.79