Finding the Fourth Proportional to 2,660.08, 3,670.78 and 2,031.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,660.08 : 3,670.78 = 2,031.05 : x
2. Step 2: Convert to fraction form
   2,660.08/3,670.78 = 2,031.05/x
3. Step 3: Cross multiply
   2,660.08x = 3,670.78 × 2,031.05
4. Step 4: Simplify right side
   2,660.08x = 7,455,537.72
5. Step 5: Solve for x
   x = 7,455,537.72/2,660.08
6. Step 6: Final answer
   x = 2,802.75