Finding the Fourth Proportional to 2,945.51, 4,066.03 and 2,106.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,945.51 : 4,066.03 = 2,106.55 : x
2. Step 2: Convert to fraction form
   2,945.51/4,066.03 = 2,106.55/x
3. Step 3: Cross multiply
   2,945.51x = 4,066.03 × 2,106.55
4. Step 4: Simplify right side
   2,945.51x = 8,565,295.50
5. Step 5: Solve for x
   x = 8,565,295.50/2,945.51
6. Step 6: Final answer
   x = 2,907.92