Finding the Fourth Proportional to 2,019.70, 3,031.35 and 1,046.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,019.70 : 3,031.35 = 1,046.47 : x
2. Step 2: Convert to fraction form
   2,019.70/3,031.35 = 1,046.47/x
3. Step 3: Cross multiply
   2,019.70x = 3,031.35 × 1,046.47
4. Step 4: Simplify right side
   2,019.70x = 3,172,216.83
5. Step 5: Solve for x
   x = 3,172,216.83/2,019.70
6. Step 6: Final answer
   x = 1,570.64