Finding the Fourth Proportional to 1,656.06, 2,300.69 and 1,640.85

Step by Step Solution

1. Step 1: Write the proportion equation
   1,656.06 : 2,300.69 = 1,640.85 : x
2. Step 2: Convert to fraction form
   1,656.06/2,300.69 = 1,640.85/x
3. Step 3: Cross multiply
   1,656.06x = 2,300.69 × 1,640.85
4. Step 4: Simplify right side
   1,656.06x = 3,775,078.98
5. Step 5: Solve for x
   x = 3,775,078.98/1,656.06
6. Step 6: Final answer
   x = 2,279.55