Finding the Fourth Proportional to 2,066.14, 3,100.47 and 911.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,066.14 : 3,100.47 = 911.89 : x
2. Step 2: Convert to fraction form
   2,066.14/3,100.47 = 911.89/x
3. Step 3: Cross multiply
   2,066.14x = 3,100.47 × 911.89
4. Step 4: Simplify right side
   2,066.14x = 2,827,287.59
5. Step 5: Solve for x
   x = 2,827,287.59/2,066.14
6. Step 6: Final answer
   x = 1,368.39