Finding the Fourth Proportional to 3,450.15, 5,175.27 and 985.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,450.15 : 5,175.27 = 985.05 : x
2. Step 2: Convert to fraction form
   3,450.15/5,175.27 = 985.05/x
3. Step 3: Cross multiply
   3,450.15x = 5,175.27 × 985.05
4. Step 4: Simplify right side
   3,450.15x = 5,097,899.71
5. Step 5: Solve for x
   x = 5,097,899.71/3,450.15
6. Step 6: Final answer
   x = 1,477.59