Finding the Fourth Proportional to 1,007.74, 1,499.96 and 985.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,007.74 : 1,499.96 = 985.06 : x
2. Step 2: Convert to fraction form
   1,007.74/1,499.96 = 985.06/x
3. Step 3: Cross multiply
   1,007.74x = 1,499.96 × 985.06
4. Step 4: Simplify right side
   1,007.74x = 1,477,538.17
5. Step 5: Solve for x
   x = 1,477,538.17/1,007.74
6. Step 6: Final answer
   x = 1,466.20