Finding the Fourth Proportional to 1,917.23, 2,645.72 and 1,066.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,917.23 : 2,645.72 = 1,066.46 : x
2. Step 2: Convert to fraction form
   1,917.23/2,645.72 = 1,066.46/x
3. Step 3: Cross multiply
   1,917.23x = 2,645.72 × 1,066.46
4. Step 4: Simplify right side
   1,917.23x = 2,821,554.55
5. Step 5: Solve for x
   x = 2,821,554.55/1,917.23
6. Step 6: Final answer
   x = 1,471.68