Finding the Fourth Proportional to 2,012.60, 3,019.47 and 714.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.60 : 3,019.47 = 714.20 : x
2. Step 2: Convert to fraction form
   2,012.60/3,019.47 = 714.20/x
3. Step 3: Cross multiply
   2,012.60x = 3,019.47 × 714.20
4. Step 4: Simplify right side
   2,012.60x = 2,156,505.47
5. Step 5: Solve for x
   x = 2,156,505.47/2,012.60
6. Step 6: Final answer
   x = 1,071.50