Finding the Fourth Proportional to 1,005.48, 1,507.06 and 682.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,005.48 : 1,507.06 = 682.52 : x
2. Step 2: Convert to fraction form
   1,005.48/1,507.06 = 682.52/x
3. Step 3: Cross multiply
   1,005.48x = 1,507.06 × 682.52
4. Step 4: Simplify right side
   1,005.48x = 1,028,598.59
5. Step 5: Solve for x
   x = 1,028,598.59/1,005.48
6. Step 6: Final answer
   x = 1,022.99