Finding the Fourth Proportional to 3,326.15, 4,987.69 and 985.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,326.15 : 4,987.69 = 985.31 : x
2. Step 2: Convert to fraction form
   3,326.15/4,987.69 = 985.31/x
3. Step 3: Cross multiply
   3,326.15x = 4,987.69 × 985.31
4. Step 4: Simplify right side
   3,326.15x = 4,914,420.83
5. Step 5: Solve for x
   x = 4,914,420.83/3,326.15
6. Step 6: Final answer
   x = 1,477.51