Finding the Fourth Proportional to 2,015.40, 3,029.01 and 1,670.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,015.40 : 3,029.01 = 1,670.94 : x
2. Step 2: Convert to fraction form
   2,015.40/3,029.01 = 1,670.94/x
3. Step 3: Cross multiply
   2,015.40x = 3,029.01 × 1,670.94
4. Step 4: Simplify right side
   2,015.40x = 5,061,293.97
5. Step 5: Solve for x
   x = 5,061,293.97/2,015.40
6. Step 6: Final answer
   x = 2,511.31