Finding the Fourth Proportional to 2,031.60, 3,043.80 and 1,664.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,031.60 : 3,043.80 = 1,664.40 : x
2. Step 2: Convert to fraction form
   2,031.60/3,043.80 = 1,664.40/x
3. Step 3: Cross multiply
   2,031.60x = 3,043.80 × 1,664.40
4. Step 4: Simplify right side
   2,031.60x = 5,066,100.72
5. Step 5: Solve for x
   x = 5,066,100.72/2,031.60
6. Step 6: Final answer
   x = 2,493.65