Finding the Fourth Proportional to 2,066.40, 2,851.60 and 1,134.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,066.40 : 2,851.60 = 1,134.88 : x
2. Step 2: Convert to fraction form
   2,066.40/2,851.60 = 1,134.88/x
3. Step 3: Cross multiply
   2,066.40x = 2,851.60 × 1,134.88
4. Step 4: Simplify right side
   2,066.40x = 3,236,223.81
5. Step 5: Solve for x
   x = 3,236,223.81/2,066.40
6. Step 6: Final answer
   x = 1,566.12