Finding the Fourth Proportional to 2,147.45, 3,219.30 and 832.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,147.45 : 3,219.30 = 832.10 : x
2. Step 2: Convert to fraction form
   2,147.45/3,219.30 = 832.10/x
3. Step 3: Cross multiply
   2,147.45x = 3,219.30 × 832.10
4. Step 4: Simplify right side
   2,147.45x = 2,678,779.53
5. Step 5: Solve for x
   x = 2,678,779.53/2,147.45
6. Step 6: Final answer
   x = 1,247.42