Finding the Fourth Proportional to 3,558.63, 4,910.90 and 2,066.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,558.63 : 4,910.90 = 2,066.61 : x
2. Step 2: Convert to fraction form
   3,558.63/4,910.90 = 2,066.61/x
3. Step 3: Cross multiply
   3,558.63x = 4,910.90 × 2,066.61
4. Step 4: Simplify right side
   3,558.63x = 10,148,904.72
5. Step 5: Solve for x
   x = 10,148,904.72/3,558.63
6. Step 6: Final answer
   x = 2,851.91