Finding the Fourth Proportional to 2,012.10, 3,018.72 and 713.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.10 : 3,018.72 = 713.70 : x
2. Step 2: Convert to fraction form
   2,012.10/3,018.72 = 713.70/x
3. Step 3: Cross multiply
   2,012.10x = 3,018.72 × 713.70
4. Step 4: Simplify right side
   2,012.10x = 2,154,460.46
5. Step 5: Solve for x
   x = 2,154,460.46/2,012.10
6. Step 6: Final answer
   x = 1,070.75