Finding the Fourth Proportional to 2,066.86, 2,852.94 and 1,405.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,066.86 : 2,852.94 = 1,405.72 : x
2. Step 2: Convert to fraction form
   2,066.86/2,852.94 = 1,405.72/x
3. Step 3: Cross multiply
   2,066.86x = 2,852.94 × 1,405.72
4. Step 4: Simplify right side
   2,066.86x = 4,010,434.82
5. Step 5: Solve for x
   x = 4,010,434.82/2,066.86
6. Step 6: Final answer
   x = 1,940.35