Finding the Fourth Proportional to 2,059.19, 3,090.60 and 1,647.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,059.19 : 3,090.60 = 1,647.30 : x
2. Step 2: Convert to fraction form
   2,059.19/3,090.60 = 1,647.30/x
3. Step 3: Cross multiply
   2,059.19x = 3,090.60 × 1,647.30
4. Step 4: Simplify right side
   2,059.19x = 5,091,145.38
5. Step 5: Solve for x
   x = 5,091,145.38/2,059.19
6. Step 6: Final answer
   x = 2,472.41