Finding the Fourth Proportional to 3,012.58, 4,519.47 and 1,066.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,012.58 : 4,519.47 = 1,066.15 : x
2. Step 2: Convert to fraction form
   3,012.58/4,519.47 = 1,066.15/x
3. Step 3: Cross multiply
   3,012.58x = 4,519.47 × 1,066.15
4. Step 4: Simplify right side
   3,012.58x = 4,818,417.17
5. Step 5: Solve for x
   x = 4,818,417.17/3,012.58
6. Step 6: Final answer
   x = 1,599.43